docs/edits

[gnikit]

• chore: moved future plans after installation and setup instructions
• chore: added explicit docs section and link
• chore: added active to indicate non-archive mode
• ci: remove deprecated action in favour of explicit compilation
• docs: financial contributing instructinos
• docs: updated Support section

[github-actions[bot]]

PR Preview Action v1.4.7 :---: :rocket: Deployed preview to https://fortls.fortran-lang.org/pr-preview/pr-391/ on branch gh-pages at 2024-05-10 13:20 UTC

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 87.98%. Comparing base (8b2960c) to head (882f020).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #391 +/- ## ======================================= Coverage 87.98% 87.98% ======================================= Files 35 35 Lines 4785 4785 ======================================= Hits 4210 4210 Misses 575 575 ```

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