Update contributing sections (#821)

Rename Developer to Contributor guide
- I believe this sounds more inclusive and likely improves the diversity of contributors.
Separate translation section
clarify external resources
Add links to UI/UX and user research repos
Separate issue tracker and discussions
- I imagine this is part of the confusion for people who report bugs to the discussion tracker.
Add welcome section

Reviewed-on: https://codeberg.org/forgejo/docs/pulls/821
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: Otto Richter <git@otto.splvs.net>
Co-committed-by: Otto Richter <git@otto.splvs.net>

docs/contributor/index.md

@@ -1,16 +1,26 @@
 ---
-title: 'Forgejo Developer Guide'
+title: 'Forgejo Contributor Guide'
 ---
 
-This area will be targeted to people who want to hack Forgejo and adjust it to
+This area is targeted to people who want to improve Forgejo and adjust it to
 their needs.
 
+We encourage you to [read our warm welcome first](./welcome/), then get involved.
+
 - For everyone involved
   - [Code of Conduct](./coc/)
-  - [Bugs, features, security and others discussions](./discussions/)
+  - [Bugs, enhancement ideas and development roadmap](https://codeberg.org/forgejo/forgejo/issues)
+  - [General discussions related to Forgejo (tips & tricks, news, ideas, questions)](./discussions/)
   - [Governance](./governance/)
-  - [Sustainability and funding](https://codeberg.org/forgejo/sustainability)
-- For contributors
+  - [Sustainability and funding repository](https://codeberg.org/forgejo/sustainability)
+- For translators
+  - [Localization](./localization/)
+  - [Base localization](./localization-english/)
+  - [Localization admin duties](./localization-admin/)
+- For UI/UX designers and user researchers
+  - [Design repository](https://codeberg.org/forgejo/design/)
+  - [User Research repository](https://codeberg.org/forgejo/user-research/)
+- For developers
   - [Compiling from source](./from-source/)
   - [Testing](./testing/)
   - [Development environment](./development-environment/)
@@ -21,12 +31,9 @@ their needs.
   - [Threat Analysis](./threat-analysis/)
   - [Developer Certificate of Origin (DCO)](./dco/)
   - [code.forgejo.org](./code-forgejo-org/)
-  - [next.forgejo.org](https://code.forgejo.org/infrastructure/k8s)
+  - [next.forgejo.org kubernetes infrastructure](https://code.forgejo.org/infrastructure/k8s)
   - [static pages](./static-pages/)
   - [Forgejo runner implementation notes](https://code.forgejo.org/forgejo/runner/#hacking)
-  - [Localization](./localization/)
-  - [Base localization](./localization-english/)
-  - [Localization admin duties](./localization-admin/)
   - [Dependency management](./dependencies/)
 - For maintainers
   - [Hardware infrastructure](./infrastructure/)

docs/contributor/welcome.md

@@ -0,0 +1,52 @@
+---
+title: 'Welcome to Forgejo'
+license: 'CC-BY-SA-4.0'
+---
+
+Welcome to our project! We are looking forward to seeing you participate in our community.
+Thank you so much for improving Forgejo within your means.
+
+Forgejo consists of a diverse community,
+and so far we have found a place for everyone and their unique skills,
+no matter if they are in communication, management or technical.
+
+Forgejo contributors are very motivated and aim at a very high software quality,
+and we hope you'll find yourself inspired by the spirit in our community.
+The standards might feel surprisingly high if you compare to some other free software projects of similar size.
+Try to bring some patience and consider starting with small contributions to get used to the workflow.
+Don't be afraid: We are here to help you in any situation,
+and there are low-hanging fruits and easy tasks to get started with.
+
+Some examples you might be surprised about:
+
+- We perform [user research](https://codeberg.org/forgejo/user-research) and user testing.
+- We try to apply a [design workflow](https://codeberg.org/forgejo/design/) prior to implementing feature requests (read about the [background](https://codeberg.org/forgejo/discussions/issues/178)).
+- To reduce the long-term maintenance effort, we require that code changes bring a significant amount of testing.
+- Changes can undergo a lot of review and iterations (not only code but also documentation, translations etc).
+
+## Getting Started
+
+We recommend to join the Matrix channels (see link in footer) and say hi.
+The chats are very active and a good place to ask for help or get to know the community.
+
+Depending on where you want to get involved with, check the [list of resources](../).
+There might be subjects with less or incomplete onboarding information.
+Don't hesitate to say hi and ask for more information,
+especially if you want to contribute in a domain that has no clear getting-started procedure
+(e.g. helping with project communication / socializing).
+
+If you want to start developing for Forgejo,
+we recommend you take a look at [good first issues](https://codeberg.org/forgejo/forgejo/issues/?labels=222666).
+In the conversation, you will typically find some information about where to start and what is expected in the change.
+Don't hesitate to reply to the issue, explain you'd like to get started or ask questions if any.
+The maintainer who added the "good first issue" label will be happy to assist you on your way.
+
+## Getting into the project
+
+If you have fun contributing to Forgejo,
+we invite you to consider yourself a part of the community.
+Hang around in the chats, have fun with others and feel free to share your feedback, even on things you didn't yet contribute to.
+We recommend you make yourself familiar with our [governance repository](https://codeberg.org/forgejo/governance)
+and watch the activity for decisions you might want to participate in.
+[Check out the teams](https://codeberg.org/forgejo/governance/src/branch/main/TEAMS.md)
+and consider applying to those who match your interests.

docs/index.md

@@ -7,5 +7,5 @@ title: 'Forgejo prerelease documentation'
 - [FAQ](/faq/)
 - [Administrator guide](./admin/)
 - [User guide](./user/)
-- [Developer guide](./developer/)
+- [Contributor guide](./contributor/)
 - [License](./license/)