[SublimeText] Add docs for LSP installation and usage with Chromium

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Change-Id: I4c819f5e8c92131e4abb60ee04c0797afd095b5f
Reviewed-on: https://chromium-review.googlesource.com/c/1394802
Reviewed-by: Josh Karlin <[email protected]>
Commit-Queue: Josh Karlin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#620814}
1 file changed