Add language server daemon. (#2251)

* Add language server daemon.

* Fix.

Co-authored-by: Yong He <yhe@nvidia.com>
Co-authored-by: jsmall-nvidia <jsmall@nvidia.com>
Co-authored-by: Theresa Foley <10618364+tangent-vector@users.noreply.github.com>

2 files changed, 313 insertions, 0 deletions

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