fix: reduce excess stylelint warnings from bundle module file

Fixes large number of stylelint warnings appearing after yarn start.
These were the result of stylelint running on the
tools/bundle/dist/index.module.css file.

- Adds stylelint override to better lint module files that have a
  different class format.
- Add ignoreFiles for the tools/bundle/dist, as stylelint should not
  be running on the dist folders during this step; it seems to be
  disregarding the .stylelintignore file.

Author: jawinn

stylelint.config.js

@@ -14,6 +14,9 @@ module.exports = {
 		"@spectrum-tools/stylelint-theme-alignment",
 		// "stylelint-high-performance-animation",
 	],
+	ignoreFiles: [
+		"tools/bundle/dist/*.css",
+	],
 	rules: {
 		/** --------------------------------------------------------------
 		 * Disabled rules
@@ -235,5 +238,17 @@ module.exports = {
 				],
 			}
 		},
+		{
+			/* Module CSS file classes have an underscore before classes, and use underscores instead of a dash as separators (e.g. _spectrum_well) */
+			files: ["tools/bundle/**/*.module.css"],
+			rules: {
+				"selector-class-pattern": [
+					"^_spectrum$|^(_)?(spectrum|is|u)(_|-)[A-Za-z0-9-_]+", {
+						resolveNestedSelectors: true
+					}
+				],
+				"keyframes-name-pattern": null,
+			}
+		},
 	],
 };