Add net 8, 9, 10, 11 Aspire code modification configs

[haileymck]

• adds net 8, 9, 10, 11 aspire code modification configs
• copies these 9, 10, 11 config files from their respective branches but there isn't an implementation on the net 8 version of dotnet scaffold, but it can be the same as net 9 here
• updates the packing of these files to nest aspnet "Templates" under an AspNet folder. I got copilot to generate this diagram of how the files are stored in .dotnet\tools\.store
  Aspnet/
  ├── Templates/
  │ |── net8.0/
  │ ├── net9.0/
  │ ├── net10.0/
  │ └── net11.0/
  └── CodeModificationConfigs/
  ├── net8.0/
  │ ├── blazorEntraChanges.json
  │ ├── efControllerChanges.json
  │ └── ...
  ├── net9.0/
  ├── net10.0/
  └── net11.0/

Aspire/
├── net8.0/
│ └── CodeModificationConfigs/
│ ├── Caching/
│ ├── Database/
│ └── Storage/
├── net9.0/
│ └── CodeModificationConfigs/
├── net10.0/
│ └── CodeModificationConfigs/
└── net11.0/
└── CodeModificationConfigs/

fixes #3526