Chore(build): CNX-8713 CNX-8572 CNX-8389: Enforce no more warning (Unique Analyser codes) for SDK projects

[JR-Morgan]

• For CI builds only:
  • Added TreatWarningsAsErrors on all SDK projects
  • Added existing warning codes as WarningsNotAsErrors

This means that no new types of warnings can be introduced without CI erroring.
It won't stop new violations of any of the existing types.

Remaining Warnings in Objects

      69 | IDE1006 
      33 | CA1819 
      26 | CA1034 
      11 | IDE0060 
       9 | CA1708 
       7 | CA2225 
       6 | CA2201 
       5 | CA1711 
       4 | CA1008 
       4 | CA1724 
       4 | CS0728 
       3 | CA1716 
       2 | CA1024 
       1 | CA1051 
       1 | CA1065 
       1 | CA1725 
       1 | CS0659 
       1 | CS0661 
       1 | IDE0041 

Remaining Warnings in Core

      59 | IDE1006 
      10 | CA1003 
       8 | CA1051 
       8 | CA1724 
       7 | CA1710 
       5 | CS8600 
       5 | CS8602 
       4 | CA1000 
       3 | CA1063 
       3 | CA1502 
       3 | CA1720 
       3 | CA1851 
       3 | CS0618 
       3 | CS8604 
       2 | CA1708 
       2 | CA1711 
       2 | CA2201 
       2 | CS8603 
       2 | IDE0032 
       2 | IDE0059 
       2 | IDE0130 
       1 | CA1001 
       1 | CA1024 
       1 | CA1033 
       1 | CA1034 
       1 | CA1055 
       1 | CA1065 
       1 | CA1506 
       1 | CA1716 
       1 | CA1721 
       1 | CA1816 
       1 | CA1861 
       1 | CS0659 
       1 | CS0809 

[AlanRynne]

Changes were made while reviewed by me and claire.

Double checked everything now and it looks good