Add option for parallel diff edits

[mrubens]

Still need to test this out, but in this branch it's behind a checkbox like this:

---

Important

Adds support for parallel diff edits with a new multisearchDiffEnabled setting and strategy.

• Behavior:
  • Adds multisearchDiffEnabled setting for parallel diff edits in Cline.ts and ClineProvider.ts.
  • Implements SearchReplaceMultisearchDiffStrategy in DiffStrategy.ts.
• UI:
  • Adds checkbox for multisearchDiffEnabled in SettingsView.tsx.
  • Updates ExtensionStateContext.tsx to manage new setting state.
• Testing:
  • Adds tests for SearchReplaceMultisearchDiffStrategy in search-replace-multisearch.test.ts.
• Misc:
  • Updates ClineProvider.ts to handle multisearchDiffEnabled state.
  • Modifies WebviewMessage.ts and ExtensionMessage.ts to include multisearchDiffEnabled message type.

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🦋 Changeset detected

Latest commit: 4058c2b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
roo-cline	Patch

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[KyleHerndon]

Oh my! Thank you for writing this! I desperately want this feature landed.