ci: introduce CI (#6) #20

Job	Run time
Repos (elixir-lang/elixir)	1m 54s
Formatter	1m 48s
Tests	1m 43s
Repos (elixir-ecto/ecto)	1m 44s
Repos (elixir-ecto/ecto_sql)	1m 56s
Repos (phoenixframework/phoenix)	1m 43s
Repos (phoenixframework/phoenix_live_view)	1m 53s
Repos (elixir-tools/next-ls)	1m 49s
Repos (elixir-tools/gen_lsp)	1m 40s
Repos (michalmuskala/jason)	1m 40s
Repos (beam-telemetry/telemetry)	1m 43s
Repos (elixir-plug/plug)	1m 39s
Repos (ericmj/decimal)	1m 41s
Repos (elixir-gettext/gettext)	1m 41s
Repos (rrrene/credo)	1m 53s
Repos (wojtekmac/req)	1m 38s
Repos (bitwalker/timex)	1m 40s
Repos (mtrudel/bandit)	1m 39s
Repos (witchcrafters/witchcraft)	1m 43s
Repos (witchcrafters/type_class)	1m 45s
Repos (witchcrafters/quark)	1m 52s
Repos (oestrich/aino)	1m 44s
Repos (sorentwo/oban)	1m 39s
	40m 7s

Provide feedback