chore: add husky pre-commit hook and lint-staged configuration

- Created a pre-commit hook in .husky to run lint-staged.
- Added .lintstagedrc.mjs to format frontend files with Prettier and apply Spotless to backend Java files.
- Introduced .prettierignore to exclude specific directories from formatting.

frontend/tsconfig.spec.json

@@ -5,15 +5,10 @@
 	"compilerOptions": {
 		"outDir": "./out-tsc/spec",
 		"rootDir": "./src/app",
-		"types": [
-			"vitest/globals"
-		]
+		"types": ["vitest/globals"]
 	},
 	"angularCompilerOptions": {
 		"strictTemplates": true
 	},
-	"include": [
-		"src/**/*.d.ts",
-		"src/**/*.spec.ts"
-	]
-}
+	"include": ["src/**/*.d.ts", "src/**/*.spec.ts"]
+}