Create the directory if it does not exist.
In this way, we can prevent the error:
`install: failed to access ‘~/.local/bin’: No such file or directory`
The installation method used up until now would always leave one copy of the lazydocker binary in the extraction directory. This copy is not actually needed after installation, so it should be removed. TheAxelander also pointed this out in his comment at https://github.com/jesseduffield/lazydocker/issues/270#issuecomment-1042983635.
This commit changes that behaviour and makes the install script cleanup after itself.
