🚀[Feature]: Add ability to parse an incomplete/shorthand version

[MariusStorhaug]

Description

Should support running [PSSemVer]'1.0' and have it create a PÅSSemVer object that sets major and minor to the defined values. Same if just major is defined.

>_ [PSSemVer]'1'

Prefix        : 
Major         : 1
Minor         : 0
Patch         : 0
Prerelease    : 
BuildMetadata : 

>_ [PSSemVer]'2.1'

Prefix        : 
Major         : 2
Minor         : 1
Patch         : 0
Prerelease    : 
BuildMetadata :