stop using requirementslib models (#5793)

* Move away from requirementslib models

* Revise test since PEP-440 does not support wildcard versions but does support equivalent compatible release specifiers.

* simplify and remove dead code

* Ensure the os_name marker is AND with the other markers.

* Move what we still need from requirementslib into the pipenv utils and stop vendoring it.

* Remove requirementslib.

* force upgrade of virtualenv for python 3.12

* remove virtualenv-clone

* Update vcs specifiers documentation; infer name from specific pip line formats where possible.

* Provide helpful text and error for recently removed commands

* Set the right log levels and verbosity to show users the errors generated by pip resolver when supplying -v flag

* Fix the collection of all matching package hashes for non-pypi indexes.  Plus lesson from testing torch which contains local identifiers.

.github/workflows/ci.yaml

@@ -75,7 +75,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]
+        python-version: [3.7, 3.8, 3.9, "3.10", "3.11"]  # "3.12-dev" Windows CI hangs indefinitely
         os: [MacOS, Ubuntu, Windows]
 
     steps: