Determine indent level from more modes (#258)

Pass CSS, GraphQL, HTML, Ruby, Svelte, and YAML mode indent setting to
formatters that make use of it through `apheleia-formatters-js-indent`.

`prettier-markdown` and `prettier-scss` attempt to make use of this too,
but `markdown-mode` and `scss-mode` don't have such a setting that I can
tell. Left the uses in place for `indent-tabs-mode` support anyway.

BTW the `apheleia-formatters-js-indent` name and its description does
not seem quite spot on, as it was already being (partially
unsuccessfully) (ab?)used by some modes for which "JavaScript like"ness
is a bit of a stretch :)

Co-authored-by: Radon Rosborough <radon@intuitiveexplanations.com>

CHANGELOG.md

@@ -8,6 +8,8 @@ The format is based on [Keep a Changelog].
 * Use `perltidy` as default formatter for `cperl-mode` ([#260]).
 * The `perltidy` formatter now supports Emacs indentation and line length
   settings ([#261]).
+* Indent level is now determined for `graphql-mode`, `html-mode`, `ruby-mode`,
+  `ruby-ts-mode`, `svelte-mode`, and `yaml-mode` ([#258]).
 
 ### Formatters
 * [`dprint`](https://dprint.dev) for various (depending on
@@ -31,6 +33,7 @@ The format is based on [Keep a Changelog].
 [#209]: https://github.com/radian-software/apheleia/pull/209
 [#229]: https://github.com/radian-software/apheleia/pull/229
 [#257]: https://github.com/radian-software/apheleia/pull/257
+[#258]: https://github.com/radian-software/apheleia/pull/258
 [#260]: https://github.com/radian-software/apheleia/pull/260
 [#261]: https://github.com/radian-software/apheleia/pull/261
 [#263]: https://github.com/radian-software/apheleia/pull/263

apheleia-utils.el

@@ -38,6 +38,8 @@ always returns nil to defer to the formatter."
               (cperl-mode 'cperl-indent-level)
               (css-mode 'css-indent-offset)
               (css-ts-mode 'css-indent-offset)
+              (graphql-mode 'graphql-indent-level)
+              (html-mode 'sgml-basic-offset)
               (js-jsx-mode 'js-indent-level)
               (js-ts-mode 'js-indent-level)
               (js-mode 'js-indent-level)
@@ -50,11 +52,15 @@ always returns nil to defer to the formatter."
               (robot-mode 'robot-mode-basic-offset)
               (perl-mode 'perl-indent-level)
               (python-mode 'python-indent-offset)
+              (ruby-mode 'ruby-indent-level)
+              (ruby-ts-mode 'ruby-indent-level)
               (scss-mode 'css-indent-offset)
+              (svelte-mode 'svelte-basic-offset)
               (web-mode 'web-mode-indent-style)
               (tsx-ts-mode 'typescript-ts-mode-indent-offset)
               (typescript-mode 'typescript-indent-level)
-              (typescript-ts-mode 'typescript-ts-mode-indent-offset))))
+              (typescript-ts-mode 'typescript-ts-mode-indent-offset)
+              (yaml-mode 'yaml-indent-offset))))
 
     (when-let ((indent (and indent-var
                             (boundp indent-var)