chore: lint-format-docs-tests-bugfixes (#105)

* docs: add jsdoc

* feat: change enums to as const objects

* chore(test): add themeColors.test.ts

* fix: fix tests and bugs with strings.ts util

* fix: path alias imports and tsconfig file bug

* fix: remove --max-warnings 0

src/shared/util/colors.ts

@@ -1,11 +1,19 @@
 import { theme } from 'unocss/preset-mini';
 
+/**
+ * Represents the colors for a course.
+ */
 export interface CourseColors {
     primaryColor: string;
     secondaryColor: string;
 }
 
-// calculates luminance of a hex string
+/**
+ * Calculates the luminance of a given hexadecimal color.
+ *
+ * @param hex - The hexadecimal color value.
+ * @returns The luminance value between 0 and 1.
+ */
 export function getLuminance(hex: string): number {
     let r = parseInt(hex.substring(1, 3), 16);
     let g = parseInt(hex.substring(3, 5), 16);