better-purl: Update the PURL library for Python to support all PURL-TYPES

[DennisClark]

Deliverable: Ensure that we can parse and validate with new syntax checks all supported ecosystems.
See https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst

• alpm https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#alpm
• apk https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#apk
• bazel
• bitbucket https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#bitbucket
• bitnami https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#bitnami
• cocoapods https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#cocoapods
• cargo https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#cargo
• composer https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#composer
• conan https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#conan
• conda https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#conda
• cpan https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#cpan
• cran https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#cran
• deb https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#deb
• docker https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#docker
• gem https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#gem
• generic https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#generic
• github https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#github
• golang https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#golang
• hackage https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#hackage
• hex https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#hex
• huggingface https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#huggingface
• luarocks https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#luarocks
• maven https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#maven
• mlflow https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#mlflow
• npm https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#npm
• nuget https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#nuget
• qpkg https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#qpkg
• oci https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#oci
• pub https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#pub
• pypi https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#pypi
• rpm https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#rpm
• swid https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#swid
• swift https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#swift
• other candidate types https://github.com/package-url/purl-spec/blob/main/PURL-TYPES.rst#other-candidate-types-to-define

[kdeldycke]

I just proposed a PR that is referencing all recognized pURL types at: #188

[chinyeungli]

We already have the following supported in both purl2url.py and url2purl.py

• npm
• maven
• gem
• cran
• pypi
• composer
• github
• bitbucket
• gitlab