* feat(layout): add focus attribute in layout
* feat: add state of focus to tab
* chore: i love clippy
* test(layout): update focus options
* feat: add focus pane
* feat: apply focus-pane when layout is only loaded
* change the instruction name for focus-on-tab
* chore: apply cargo-fmt
* test: add e2e testcase
* refactor: move resizing methods to pane resizer
* refactor: move focus and close methods to pane grid
* refactor(tab): move move methods positioning to pane grid
* refactor(tab): separate pane resizer from pane grid
* style(fmt): make rustfmt happy
* style(fmt): make clippy happy