Add rudimentary grep for runtime warnings in CI · rrrene/credo@271714f

Modules should have a @moduledoc tag.

Modules should have a @moduledoc tag.

Modules should have a @moduledoc tag.

Function body is nested too deep (max depth is 2, was 3).

Function takes too many parameters (arity is 10, max is 8).

Function takes too many parameters (arity is 9, max is 8).

Function takes too many parameters (arity is 9, max is 8).

Function takes too many parameters (arity is 9, max is 8).

Nested modules could be aliased at the top of the invoking module.

Nested modules could be aliased at the top of the invoking module.

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