[lldb-dap] Adding server mode support to lldb-dap VSCode extension. (#128957)

This adds support for launching lldb-dap in server mode. The extension
will start lldb-dap in server mode on-demand and retain the server until
the VSCode window is closed (when the extension context is disposed).
While running in server mode, launch performance for binaries is greatly
improved by improving caching between debug sessions.

For example, on my local M1 Max laptop it takes ~5s to attach for the
first attach to an iOS Simulator process and ~0.5s to attach each time
after the first.

0 files changed, 0 insertions, 0 deletions