refactor: De-umbrella this application #3658

Job	Run time
File changes / List changed files	24s
Build app (or restore from cache)	4m 1s
Linting / JavaScript	3m 13s
Linting / TypeScript	3m 17s
Linting / CSS	3m 8s
Linting / Elixir	3m 10s
Unit tests / JavaScript & TypeScript / Jest	4m 53s
Unit tests / JavaScript / Mocha	3m 19s
Formatting / Elixir	3m 7s
Formatting / JavaScript & TypeScript	3m 13s
Type checks / Elixir	5m 58s
Type checks / TypeScript	3m 15s
Integration tests / Elixir	1m 5s
Unit tests / Elixir / --exclude wallaby --cover	3m 33s
	45m 36s

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