Merge features from Cline v3.13 - v3.15

[codelonesomest]

Refer:

1. https://cline.bot/blog/cline-3-13-toggleable-clinerules-slash-commands-previous-message-editing
2. https://cline.bot/blog/cline-v3-15-unveiling-task-timeline-gemini-implicit-caching-new-community-docs
3. https://cline.bot/blog/cline-v3-16-one-shot-automation-with-workflows-plus-ui-stability-gains

The useful features from 3.13:

1. Message Editing & Checkpoints (Nice to have)

The useful features from 3.15:

1. Task Timeline (Nice to have)
2. Quote replies (Nice to have)
3. Gemini Implicit Caching
4. Favorite tasks
5. Cline-assisted commit messages (Nice to have)
6. Better integration with Cursor & Windsurf
7. Redesigned Auto-Approve UI

The useful features from 3.16:

1. Workflows (Like a custom mode actually in KiloCode / RooCode)

[olearycrew]

Thanks @codelonesomest I think this is great feedback - we're going to have the team looking at all of these this week