Diagnostics refactor #1117

Job	Run time
mix test windows (Elixir 1.13.x \| Erlang/OTP 22.x)	5m 51s
mix test (Elixir 1.12.x \| Erlang/OTP 22.x)	5m 21s
mix test windows (Elixir 1.13.x \| Erlang/OTP 23.x)	6m 22s
static analysis (Elixir 1.15.x \| Erlang/OTP 25.x)	14s
mix test (Elixir 1.12.x \| Erlang/OTP 23.x)	5m 42s
mix test windows (Elixir 1.13.x \| Erlang/OTP 24.x)	4m 42s
mix test (Elixir 1.12.x \| Erlang/OTP 24.x)	3m 48s
mix test windows (Elixir 1.13.x \| Erlang/OTP 25.x)	4m 18s
mix test (Elixir 1.13.x \| Erlang/OTP 22.x)	4m 28s
mix test windows (Elixir 1.14.x \| Erlang/OTP 23.x)	6m 35s
mix test (Elixir 1.13.x \| Erlang/OTP 23.x)	4m 43s
mix test windows (Elixir 1.14.x \| Erlang/OTP 24.x)	4m 47s
mix test (Elixir 1.13.x \| Erlang/OTP 24.x)	3m 19s
mix test windows (Elixir 1.14.x \| Erlang/OTP 25.x)	4m 17s
mix test (Elixir 1.13.x \| Erlang/OTP 25.x)	3m 6s
mix test windows (Elixir 1.14.x \| Erlang/OTP 26.x)	4m 33s
mix test (Elixir 1.14.x \| Erlang/OTP 23.x)	4m 48s
mix test windows (Elixir 1.15.x \| Erlang/OTP 24.x)	4m 59s
mix test (Elixir 1.14.x \| Erlang/OTP 24.x)	3m 25s
mix test windows (Elixir 1.15.x \| Erlang/OTP 25.x)	4m 29s
mix test (Elixir 1.14.x \| Erlang/OTP 25.x)	3m 9s
mix test windows (Elixir 1.15.x \| Erlang/OTP 26.x)	4m 33s
mix test (Elixir 1.14.x \| Erlang/OTP 26.x)	3m 4s
mix test (Elixir 1.15.x \| Erlang/OTP 24.x)	3m 23s
mix test (Elixir 1.15.x \| Erlang/OTP 25.x)	3m 13s
mix test (Elixir 1.15.x \| Erlang/OTP 26.x)	3m 9s
	1h 50m 18s

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