Summary: adding our local copy of glice to the repo to use in license generating scripts

Test Plan: `bazel run @com_github_ribice_glice//:glice`

Reviewers: zasgar, michelle, #engineering

Reviewed By: michelle, #engineering

Differential Revision: https://phab.corp.pixielabs.ai/D2220

GitOrigin-RevId: 2df7efd68f6fff3054e7d98554e1d454facc77ff