[llvm] [lldb] Rename lldb-vscode to lldb-dap (PR #69264)

[David Spickett via llvm-commits]

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@@ -18,9 +18,10 @@
 
 # Introduction
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DavidSpickett wrote:

I think a stub README at the old lldb-vscode location is worth adding. It should just link here.

https://github.com/llvm/llvm-project/pull/69264