Dbg backend for debugger #1011

Job	Run time
static analysis (Elixir 1.15.x \| Erlang/OTP 25.x)	18s
mix test windows (Elixir 1.13.x \| Erlang/OTP 22.x)	8m 19s
mix test windows (Elixir 1.13.x \| Erlang/OTP 23.x)	1m 34s
mix test windows (Elixir 1.13.x \| Erlang/OTP 24.x)	6m 14s
mix test windows (Elixir 1.13.x \| Erlang/OTP 25.x)	5m 56s
mix test windows (Elixir 1.14.x \| Erlang/OTP 23.x)	2m 3s
mix test windows (Elixir 1.14.x \| Erlang/OTP 24.x)	1m 52s
mix test windows (Elixir 1.14.x \| Erlang/OTP 25.x)	1m 54s
mix test windows (Elixir 1.15.x \| Erlang/OTP 24.x)	2m 15s
mix test windows (Elixir 1.15.x \| Erlang/OTP 25.x)	1m 51s
mix test (Elixir 1.13.x \| Erlang/OTP 22.x)	5m 12s
mix test (Elixir 1.13.x \| Erlang/OTP 23.x)	6m 43s
mix test (Elixir 1.13.x \| Erlang/OTP 24.x)	4m 4s
mix test (Elixir 1.13.x \| Erlang/OTP 25.x)	3m 57s
mix test (Elixir 1.14.x \| Erlang/OTP 23.x)	1m 11s
mix test (Elixir 1.14.x \| Erlang/OTP 24.x)	1m 16s
mix test (Elixir 1.14.x \| Erlang/OTP 25.x)	1m 6s
mix test (Elixir 1.15.x \| Erlang/OTP 24.x)	1m 11s
mix test (Elixir 1.15.x \| Erlang/OTP 25.x)	1m 16s
	58m 12s

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