Live reload on file tree changes and project settings changes (#4142)

* Reload FileTree and File when changed externally

* Added tests

* Make file and project creation a bit more reliable

src/lib/codeEditor.ts

@@ -0,0 +1,3 @@
+export const normalizeLineEndings = (str: string, normalized = '\n') => {
+  return str.replace(/\r?\n/g, normalized)
+}