Code action to delete unused matches and local binds or add underscores to the names

## Is your enhancement request related to a problem? Please describe.

In a code like this:

```haskell
main = do
foo <- getFoo
let bar = 42
doThings
```

Currently the code actions for `foo <- getFoo` line is to `Disable "unused-matches" warnings` and for `let bar = 42` is to `Disable "unused-local-binds" warnings`.

## Describe the solution you'd like

It would be better to suggest that the user adds an underscore the names `foo` and `bar` or deletes the line. Additionally another code action could be to delete all unused matches and binds as sometimes I delete a function call and that makes a few matches and binds unused.

## Describe alternatives you've considered

I usually delete the lines or add underscores by hand, but that is boring.

## Additional context

N/A.