* Macros WIP
`helix_term::compositor::Callback` changed to take a `&mut Context` as
a parameter for use by `play_macro`
* Default to `@` register for macros
* Import `KeyEvent`
* Special-case shift-tab -> backtab in `KeyEvent` conversion
* Move key recording to the compositor
* Add comment
* Add persistent display of macro recording status
When macro recording is active, the pending keys display will be shifted
3 characters left, and the register being recorded to will be displayed
between brackets — e.g., `[@]` — right of the pending keys display.
* Fix/add documentation
* Use tree like structure to store keymaps
* Allow multi key keymaps in config file
* Allow multi key keymaps in insert mode
* Make keymap state self contained
* Add keymap! macro for ergonomic declaration
* Add descriptions for editor commands
* Allow keymap! to take multiple keys
* Restore infobox display
* Fix keymap merging and add infobox titles
* Fix and add tests for keymaps
* Clean up comments and apply suggestions
* Allow trailing commas in keymap!
* Remove mode suffixes from keymaps
* Preserve order of keys when showing infobox
* Make command descriptions smaller
* Strip infobox title prefix from items
* Strip infobox title prefix from items
* reverse the dependency between helix-tui and helix-view by moving a fiew types to view
* fix tests
* clippy and format fixes
Co-authored-by: Keith Simmons <keithsim@microsoft.com>
