bash, make, css: highlight and indent queries improvement (#9393)

* highlights(bash): rework keywords section

* Use more specified scope when possible for keywords like @keyword.repeat.
* Add more keywords like "local" or "unsetenv".

Limitation:
* Bash doesn't allow you to have a local variable outside of a function, so maybe we need to have better queries to not highlight the local in this case.
* If we name a function with a keyword (such as unset or local), it will use the highlight scope "keyword" instead of "function".

* indents(css, make): add basic queries

* Despite the fact that queries look simple, they improve indentation in some edge cases that helix couldn't handle correctly by default.

book/src/generated/lang-support.md

@@ -21,7 +21,7 @@
 | cpon | ✓ |  | ✓ |  |
 | cpp | ✓ | ✓ | ✓ | `clangd` |
 | crystal | ✓ | ✓ |  | `crystalline` |
-| css | ✓ |  |  | `vscode-css-language-server` |
+| css | ✓ |  | ✓ | `vscode-css-language-server` |
 | cue | ✓ |  |  | `cuelsp` |
 | d | ✓ | ✓ | ✓ | `serve-d` |
 | dart | ✓ |  | ✓ | `dart` |
@@ -97,7 +97,7 @@
 | log | ✓ |  |  |  |
 | lpf | ✓ |  |  |  |
 | lua | ✓ | ✓ | ✓ | `lua-language-server` |
-| make | ✓ |  |  |  |
+| make | ✓ |  | ✓ |  |
 | markdoc | ✓ |  |  | `markdoc-ls` |
 | markdown | ✓ |  |  | `marksman` |
 | markdown.inline | ✓ |  |  |  |