Deno.FsFile.rid
Continues work from #23075. Towards #23089.
Deno.resources()
DENO_FUTURE=1
This change removes deprecated methods from the `Deno.*` namespace when the `DENO_FUTURE=1` environment variable is used. Note: this does not address deprecated class properties and methods. E.g. `Deno.Conn.rid`.
Add a test that asserts that certain symbols are no longer available if running with `DENO_FUTURE=1` env var. Currently only checks `window` global.
