* `gh extension install` not give an error if extension already installed and a clear message
* remove test
* Add implementation
* lint go.sum
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Co-authored-by: Sam Coe <samcoe@users.noreply.github.com>
- Extensions on Windows now enabled through the `sh.exe` interpreter
- `sh.exe` now found on Windows when git was installed via scoop
- `gh extensions list` command shows origin repo for the extension
- `gh extensions upgrade --all` is required to upgrade all extensions
- Added `gh extensions remove`
- Shell completions now include aliases and extension names
- `gh` help output now lists available extension names
- Extensions are stored to XDG_DATA_HOME
