* Indicate to the user when text is copied to the clipboard
- broadcast CopyToClipboard event to plugins after selection has been
copied, and InputReceived event after any input has been received.
- add new ClientToServerMsg InputReceived
- subscribe status-bar plugin to new events, modify second line after
CopyToClipboard, reset it on InputReceived.
* remove unnecessary InputReceived ClientToServerMsg
- use existing Actions instead to know that user input has been received
* make status bar text copied hint bold green
* cleanup
* cleanup
* cleanup
* work
* resize working
* move focus working
* close pane working
* selection and fullscreen working
* pane title line
* titles and conditional scroll title
* whole tab resize working
* plugin frames working
* plugin splitting working
* truncate pane frame titles
* cleanup
* panes always draw their own borders - also fix gap
* toggle pane frames
* move toggle to screen and fix some bugs
* fix plugin frame toggle
* fix terminal window resize
* fix scrolling and fullscreen bugs
* unit tests passing
* e2e tests passing and new test for new frames added
* refactor: TerminalPane and PluginPane
* refactor: Tab
* refactor: moar Tab
* refactor: Boundaries
* only render and calculate boundaries when there are no pane frames
* refactor: Layout
* fix(grid): properly resize when coming back from alternative viewport
* style: remove commented code
* style: fmt
* style: fmt
* style: fmt + clippy
* docs(changelog): update change
* the simplified layout omits the Nerdfonts characters that are not
found in every Fontset
* add an optional config option to opt into the simplified ui
`simplified_ui: bool`
* add a config flag that allows opting into the simplified ui
`zellij options --simplified-ui`
* move the `clean` flag to the `setup` subcommand
