* feat(terminal): lazygit can now be toggled
- remove `hidden` parameter so it can be persistent
- map keybinding for both normal and term modes
- a default shell is now always reachable with `<C-t>` in a split
- add an addition keybinding `<C-\>` for `lazygit`
since it's hard to hit `<leader>gg` within the `timeoutlen` < 300ms
* revert(terminal): use float direction by default