[native] Add license for sqlite_orm
Summary:
Add the correct license for sqlite_orm in the native/cpp/lib/sqlite_orm directory.
The first part of ENG-33: https://linear.app/comm/issue/ENG-33/add-license-file-for-sqlite-orm
Test Plan: No testing needed for this
Reviewers: atul, ashoat, jon
Reviewed By: atul, ashoat
Subscribers: ginsu, tomek, abosh
Differential Revision: https://phab.comm.dev/D5294