Fix obsolete Nerd Font icons

[nix6839]

Replace the old code point with the new code point.
See: https://github.com/ryanoasis/nerd-fonts/releases/tag/v2.3.3

Material Design Icons
The Material Design Icons have to move codepoints. Historically we patch them in between F500 - FD46; but part of that range is needed for Chinese and other glyphs. With ryanoasis/nerd-fonts#773 and Plan 5+ of ryanoasis/nerd-fonts#365 their new home will be after F0001. And they grow considerably.

The v2.3.x release has both, the 'old' and the 'new' codepoints to enable you an easier transision. Please change already now your prompts and other uses to the new codepoints. Release v3.0.0 will finally drop the old codepoints (F500 - FD46).

---

TODO

• Use cargo fmt
• Add necessary tests
• Add changelog entry
• Update default config/theme in README (if applicable)

[codecov-commenter]

Codecov Report

Merging #830 (2445d0c) into master (8c62e9e) will not change coverage.
The diff coverage is 100.00%.

📣 This organization is not using Codecov’s GitHub App Integration. We recommend you install it so Codecov can continue to function properly for your repositories. Learn more

@@           Coverage Diff           @@
##           master     #830   +/-   ##
=======================================
  Coverage   87.35%   87.35%           
=======================================
  Files          45       45           
  Lines        4280     4280           
=======================================
  Hits         3739     3739           
  Misses        541      541           

Impacted Files	Coverage Δ
src/meta/name.rs	90.41% <100.00%> (ø)
src/theme/icon.rs	100.00% <100.00%> (ø)

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[zwpaper]

can you help to add some notice under FAQ about this change?

[nix6839]

can you help to add some notice under FAQ about this change?

Where is the FAQ? Should I add it to the README section?

(edited)
Oh sorry I found that.

[nix6839]

@zwpaper I've added a FAQ. I'm not a native English speaker so please let me know if you see anything strange in the FAQs.

[zwpaper]

hi @nix6839, I have one more question, Are the pre-patched fonts updated to this latest v2.3.x version? https://github.com/ryanoasis/nerd-fonts#patched-fonts

looks like the Hack Nerd I was using did not show the expected icons

[nix6839]

@zwpaper If you look at https://washnix.com/hack-nerd/, it is patched correctly.

The source code of the page: https://github.com/nix6839/hack-nerd/blob/main/index.html

[zwpaper]

hi @nix6839, I double check for the icons, it works like a charm, will merge after CI passed, thanks again!

[nix6839]

Thank you for your hard work.