obs-powershell pseudotype improvements

[StartAutomating]

The pseduotypes in obs-powershell need some updates:

For starters, their names should be simplified (while keeping their exisiting .PSTypenames)

• [ ] #173
• [ ] #174
• [ ] #175

Additionally, various improvements can be made:

• [ ] #170
• [ ] #178
• [ ] #182
• [ ] #183
• Transform Improvements:
  • [ ] #171
  • [ ] #172
• Filter Improvements:
  • [ ] #181
  • [ ] #184

And a couple of pseudotypes can be added:

• [ ] #144
• [ ] #176
• [ ] #177