Add lldb-dap to Swift distributions (#88482)

This includes the lldb-dap executable in the MacOS and Linux
distributions of Swift. Currently there is a commit in the Apple repo to
do this for just MacOS https://github.com/apple/llvm-project/pull/8176.
This PR extends this to both Linux and MacOS and brings the change
upstream.

@JDevlieghere @adrian-prantl

GitOrigin-RevId: 2c2377d3a9305b86ab110a4f8390b2d16bff9510
2 files changed