feat: course color generation (#179)

* feat: course color generation

* feat: add proper TS for hex colors

* refactor: fix oklab and improve contrast ratios

* fix: update HexColor type

* refactor: update color switch point

* refactor: color-related functions and types

* fix: imports and TS issues

* fix: imports and TS issues

* chore: add no-restricted-syntax ForInStatement

* chore(docs): add jsdoc

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Co-authored-by: doprz <52579214+doprz@users.noreply.github.com>

src/shared/util/updateBadgeText.ts

@@ -1,4 +1,4 @@
-import { colors } from './themeColors';
+import { colors } from '../types/ThemeColors';
 import { MILLISECOND } from './time';
 
 /** How long should we flash the badge when it changes value */