Add Filterable for Select

[pjg11]

Is your feature request related to a problem? Please describe.
I was working on recreating the older version of gum choose (prior to using huh) with huh's Select field. The older version didn't have an input field or filtering, but Select has filtering enabled without an input field. So typing the / key and typing input filters the list, but I don't see what I typed, which doesn't feel right (I also have the help section hidden).

This also makes the current gum choose very similar in functionality to gum filter rather than it being a component with different functionality.

I looked for a way to disable filtering, and noticed that Select does not have the option to do so. However MultiSelect does, and I'd like to suggest adding the option to Select as well.

Describe the solution you'd like
Add the filterable value to the Select struct in field_select.go, and the corresponding Filterable() function to set the value of filterable.

Describe alternatives you've considered
Use the component as is, with filtering enabled (aka how gum choose currently works)

Additional context
None

[joaogmguimaraes]

So typing the / key and typing input filters the list, but I don't see what I typed, which doesn't feel right (I also have the help section hidden).

If no title is added to the menu, the filter text will not be displayed (this also occurs with the MultiSelect).

[joaogmguimaraes]

I forgot to add the test cases.
First with title and second without

[bashbunni]

Hey @pjg11, thank you so much for wanting to make this project better! I've converted this to a discussion so we can talk through it and keep our backlog clear. If it does end up being something we want to add, we'll promote it back to an issue when we are ready to work on it.

If we commit to this feature, that's a feature we will need to maintain for the lifespan of this project. So, since "Yes is forever", we are carefully considering new features.

I do think this makes sense to implement given that we already support this in MultiSelect. Side note: Since this issue was created, Gum has been decoupled from Gum.