chore: convert to TypeScript #475

Job	Run time
Android Lint	1m 50s
JS Tests	13s
iOS Sample App	8m 59s
Android Sample App	4m 43s
Android kotlin lint	45s
Android Unit Tests	2m 2s
Save PR Number for Dependabot Automerge / Save PR Number for Dependabot Automerge	0s
Notify GChat / notify-gchat	4s
	18m 36s

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