tsconfig: Specify include

Specify, what folders to include in the compilation process. This limits the scope, might reduce compilation time and will resolve errors outputted to the console during build.

tsconfig.json

@@ -24,5 +24,6 @@
         "./src/test/mocks/*"
       ]
     }
-  }
+  },
+  "include": ["./src", "./playwright"]
 }