feat(intellij): support inline chat

[zhanba]

Feature

• Inline chat in Intellij Support Inline-Edit in IntelliJ Plugin #4019

Detail features include:

• Open Inline Chat in 4 way:
  • intention action
  • context menu
  • gutter icon
  • keyboard shortcut(cmd/control + i)
• Inline ChatUI
  • command input(submit and discard)
  • history command and suggested command management
• Edit result
  • code edit highlight
  • accept / discard code edit

full feature demo:

https://jam.dev/c/3d169fba-8d5c-41b2-8726-c637e1f58702

[icycodes]

Thank you for this excellent PR!

• I have some commets about the use of icons, please take a look.
• I prefer calling this feature Inline Edit. It would be great if you could update the inline chat text in the UI tooltips.
• Since there is no auto-linting and formatting script at the moment, please use the Reformat Code feature in IDEA. This will help format the code and remove unused imports. You can find this action by right-clicking on a file or directory.