refactor: outsource tsconfig to its own package

apps/vojtechmares.com/tsconfig.json

@@ -1,13 +1,12 @@
 {
+  "$schema": "https://json.schemastore.org/tsconfig",
+  "extends": "tsconfig/nextjs.json",
   "include": [
     "next-env.d.ts",
     "**/*.ts",
     "**/*.tsx",
     ".next/types/**/*.ts"
   ],
-  "exclude": [
-    "node_modules"
-  ],
   "compilerOptions": {
     "baseUrl": ".",
     "paths": {
@@ -15,35 +14,6 @@
         "./*"
       ]
     },
-    "composite": false,
-    "declaration": true,
-    "declarationMap": true,
-    "esModuleInterop": true,
-    "forceConsistentCasingInFileNames": true,
-    "inlineSources": false,
-    "isolatedModules": true,
-    "moduleResolution": "node",
-    "noUnusedLocals": false,
-    "noUnusedParameters": false,
-    "preserveWatchOutput": true,
-    "skipLibCheck": true,
-    "strict": true,
-    "target": "es5",
-    "lib": [
-      "dom",
-      "dom.iterable",
-      "esnext"
-    ],
-    "allowJs": true,
-    "noEmit": true,
-    "incremental": true,
-    "module": "esnext",
-    "resolveJsonModule": true,
-    "jsx": "preserve",
-    "plugins": [
-      {
-        "name": "next"
-      }
-    ]
+    "strictNullChecks": true
   }
 }