WIP: Stuff related to working on the settings menu + more

Moved core ui to its own folder.
Worked on theming (proper light and dark theme)
Began to work on the scroll box widget and input box constructions

I added back a script for flattening the codebase: gen_flattened_codebase.ps1

scripts/helpers/misc.ps1

@@ -0,0 +1,6 @@
+function verify-path { param( $path )
+	if (test-path $path) {return $true}
+
+	new-item -ItemType Directory -Path $path
+	return $false
+}