Oscalkit failing to parse profile where an https import, imports a relative path.

[farhankamalkhan-10p]

Related to: #57

When executing oscalkit generate code and processing a profile that has been imported using an https:// link, if that profile internally imports a profile/catalog relatively, the path is resolved incorrectly by appending the current system relative path to the https:// path of the parent profile that has imported the catalog/profile. The problem lies in the parentPath handing in:
https://github.com/docker/oscalkit/blob/c5a92172971fa7ea1ccfdf7b08f67ed5bae53683/generator/profile.go#L44

cc: @minhaj10p @anweiss

[anweiss]

Good catch @farhan-khan30

[minhaj10p]

addressed in #71
@farhan-khan30 @anweiss

[farhankamalkhan-10p]

Verified fix in #71. Closing.
@anweiss @minhaj10p