Update compatibility profiles for PowerShell 7

[rjmholt]

PR Summary

• Adds compatibility profiles for PS 7 and 6.2
• Moves the 6.1 profiles to the optional folder
• Port an old fix for alias collection that never made it in, where we get aliases that don't have any declaring module (ones declared in the initial session state)
• Fix the race condition in query objects causing intermittent test failures (I finally got a local repro) by making query initialisation eager
• Make compatibility rules supressable by their particular command/parameter, type/member names
• Add tests for PS 7 profiles

PR Checklist

• PR has a meaningful title
  • Use the present tense and imperative mood when describing your changes
• Summarized changes
• Change is not breaking
• Make sure all .cs, .ps1 and .psm1 files have the correct copyright header
• Make sure you've added a new test if existing tests do not effectively test the code changed and/or updated documentation
• This PR is ready to merge and is not Work in Progress.
  • If the PR is work in progress, please add the prefix WIP: to the beginning of the title and remove the prefix when the PR is ready.