This PR addresses issues that arise when packages in site-packages are not owned by the same user running pip.

Reproduce:

$ sudo pip install package        # installs into site-packages/package-1.0.dist-info with owner=root
$ pip install --upgrade package   # fails since $USER doesnt have permission to rename package-1.0.dist-info...
                                  #  ...but still generates site-packages/~ackage-1.0.dist-info with owner=$USER
$ pip freeze                      # WARNING when parsing site-packages/~ackage-1.0.dist-info

Changes:

• Fail fast when upgrading packages: Currently, if a user tries to upgrade a package that they don't own, a temporary folder is created before pip fails, resulting in an orphaned temp folder within site-packages every time this command is run. This change adds a UninstallationError that is raised before the temporary folder is created, through a PermissionError exception at the utils::misc::renames level.
• Add chown warning: Installing, upgrading, and uninstalling with pip fails if users don't have access to the package folder. This often happens most often when the package is owned by root from a previous sudo pip install. This change warns the user and offers potential solutions.
• Fix pip freeze for temp folders: When orphaned temp directories are left in site-packages, pip freeze warns with a parsing error. This change makes pip ignore temp directories when running pip freeze.

Issues addressed:

• Failing fast will prevent temporary directories from being created when users run pip with the wrong user: parse error at '-irtuale', but virtualenv is correct  #7763
• The new chown warning will address this user's concerns about a permissions error: pip3 have to re-download packages after Permission denied (no sudo) #4692 Not able to install scikit-image for python #4727 Permission error with pip install -e #7940
• User concerns about ~-prefixed temp directories in pip freeze will be addressed when the warning is removed. pip3 freeze output still confusing when stray AdjacentTempDirectorys are present #7269 pip list and pip freeze treat invalid packages differently #9235

Fixes #7269
Fixes #9235