chore(settings): support more than 3 lines (#53)

* chore(settings): support more than 3 lines
* chore: add confirm dialog
* chore: update example script
* chore: rm config override
* Fix spacing issues, disallow deletion of last line, fix issue where deleting lines 2 and 3 would keep them in the list, cleanup onDelete and onAppend method locations
* Initialize default settings with two empty lines

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Co-authored-by: Matthew Breedlove <sirmalloc@gmail.com>

scripts/.gitignore

@@ -0,0 +1,2 @@
+settings.json
+payload.json