✨ Find Navigator

[RayZhao1998]

A basic view and functionality of finding in workspace has been implemented with #125 . But there's a lot of work to do.

• ✨ Find Navigator: Ignore case in search #1520
• ✨ Find Navigator: Search by Matching word, Starts with, and Ends with #1521
• ✨ Find Navigator: Regular Expression Search #1519
• ✨ Find Navigator: Replace all #1466
• ✨ Find Navigator: Reference, Definition and Call Hierarchy search #1522 (maybe not in release v1.0)
• ✨ Find Navigator: Improve project find performance #1464

[KaiTheRedNinja]

I've got a working version of ignore case search, but doing the rest will require major changes to SearchModeModel.swift

[austincondiff]

@KaiTheRedNinja if you feel comfortable proceeding, I'd say go for it. Or if you'd like to keep things simple for now and do it later, you can always submit a PR of what you have.

[KaiTheRedNinja]

ykw im ambitious i'll try and change SearchModeModel and make things work. Just changing the structure of a class for ease of use and some string comparing shouldn't be as hard as what I've had to do for the project navigator.