Summary: This mirrors the extension support added to the desktop plugin and allows people to dynamically add extension commands Reviewed By: danielbuechele Differential Revision: D8691167 fbshipit-source-id: 60136b960f8bbdfa42b2077d1f5f7b391fc44443
fbshipit-source-id: b6fc29740c6875d2e78953b8a7123890a67930f2 Co-authored-by: Sebastian McKenzie <sebmck@fb.com> Co-authored-by: John Knox <jknox@fb.com> Co-authored-by: Emil Sjölander <emilsj@fb.com> Co-authored-by: Pritesh Nandgaonkar <prit91@fb.com>