Release Version 22.05.04 Emulator Core code Cleanup

Commit d2613c4 Bugfix VGA & television not working

Fixes bug on clearing arrays that broke VGA and television plugins, on PropellerCPU.cs.

Ordered update of ClockMode, XtalFrequency & CoreFrequency in HubView, using event detection when that properties changes in PropellerCPU. Files: HubView.cs, HubView.Designer.cs, Emulator.cs and PropellerCPU.cs.
Code cleanup in files: specially on PropellerCPU.cs, but also in NativeCog.cs, InterpretedCog.cs, Cog.cs.
- Added Cog.CogNum property that replace PropellerCPU.CogID().
- Changed method names to Cog.RequestHubOperation() and PropellerCPU.ExecuteHubOperation() to clarify the colaboration between classes.
- Refactored naming and visibility of members, parameters and local variables in classes, methods and enums.
- Added legacy TODO tags in Doxygen documentation, and also identify paralellism points.
- Put extra UserControl documentation of SPIN interpreted code at the end of methods, lefting more cleaner the headers of methods.
- Added XML & Doxygen comments in files.
Added first version of documentation of target .Net Framework and C# versions Gear_Emulator_C#_Versions.md.

Code cleanup in files: specially on NativeCog.cs, NativeCogInstructions.cs, and also ClockSource, FreqGenerator.cs, PLL.cs, PLLGroup.cs, SystemXtal.cs, VideoGenerator.cs.
- Refactored naming and visibility of members, parameters and local variables in classes, methods and enums.
- Added XML & Doxygen comments in files.

Corrected visibility of abstract method Cog.Boot() to private protected, affecting descendents classes InterpretedCog and NativeCog.
Code cleanup in files: specially InterpretedCog.cs.
- Refactored naming and visibility of members, parameters and local variables in classes, methods and enums.
- Added XML & Doxygen comments in files.

Invert sense of return value on Cog.ConditionCompare(), to a intuitive one: Returns TRUE if logic condition is valid, else FALSE. Files: Cog.cs, FreqGenerator.cs, NativeCog.cs.