Preparations for FileChooser implementation (Part 2 - Keyboard & Pad Shortcuts)
Details on #3411 (closed) and #3413 (closed)
Part of #3401 (closed)
It will also help move forward with AdwDialogs in !1445 (merged)
Details on #3411 (closed) and #3413 (closed)
Part of #3401 (closed)
It will also help move forward with AdwDialogs in !1445 (merged)