Support different patterns as keymaps.

[redoxahmii]

Is there anyway to use different patterns on different keymaps?
It would help a lot with using the existing solid base of integration with snacks and other while being able to customize it further with other regex patterns.

An example is filtering only markdown Todo tasks by using the pattern '([-+*]|[0-9]+\.) \[[- x/<>?!*"lb~]\] .+'
While this works if i pass it directly to opts.search.pattern it overwrites the default behavior completely so having that separation between them by keymaps can be helpful.

[redoxahmii]

And passing it like this trouble seems to fail to add this as an entry if i use that which I would assume is something related to how Trouble likes the data to be formatted for it to work.

search = {
        command = "rg",
        args = {
          "--color=never",
          "--no-heading",
          "--with-filename",
          "--line-number",
          "--column",
        },
        pattern = [[([-+*]|[0-9]+\.) \[[- x/<>?!*"lb~]\] .+]], -- ripgrep regex
      }

I'm basically just passing the pattern directly for now to test.