Add support for ommiting patch versions in the install and use commands

[Popescu-PfeifferMarc]

Is your feature request related to a problem? Please describe.
I'm frustrated when I have to explicitly type the entire version string out instead of being able to just specify the major and minor version.

Describe the solution you'd like
I want to add the functionality to type zvm i 0.11 and zvm use 0.11. If a patch version is omitted the latest available one will be installed or the latest already installed one (in the case of the use command) will be used.

Describe alternatives you've considered
none

Additional context
The node version manager also supports this feature and was the inspiration for this Issue. I'd be interested on working on this issue myself.

[Popescu-PfeifferMarc]

I would implement this by adding a function called getVersionAliases, which is called in the fetchVersionMap and getVersion function.

[tristanisham]

Hey @Popescu-PfeifferMarc , feel free to submit a pull request for this issue. There's a good target function for this called ExtractInstall. It could turn those aliases back into the proper version strings when building out the installRequest struct.