Add cache and build configuration files for .NET projects

- Created new cache JSON files for rjsmcshtml, rjsmrazor, and rpswa in both net10.0 and net7.0 directories.
- Added static web assets build configuration files in both net10.0 and net7.0 directories.
- Included build endpoint configurations and cache files for static web assets.
- Ensured all new files are properly initialized with relevant properties and hashes.

obj/Debug/net7.0/staticwebassets.build.json

@@ -1,11 +1 @@
-{
-  "Version": 1,
-  "Hash": "RfuVwFSrmDL42KLW9n4tsmvdD4doyOaYg171K58Ic/s=",
-  "Source": "Microsoft.SelfService.Portal.Core.API",
-  "BasePath": "_content/Microsoft.SelfService.Portal.Core.API",
-  "Mode": "Default",
-  "ManifestType": "Build",
-  "ReferencedProjectsConfiguration": [],
-  "DiscoveryPatterns": [],
-  "Assets": []
-}
+{"Version":1,"Hash":"cHXLeIaOvbW9DoRmMcKQETs40b/kpgFCBjYp2tugVCo=","Source":"Microsoft.SelfService.Portal.Core.API","BasePath":"/","Mode":"Root","ManifestType":"Build","ReferencedProjectsConfiguration":[],"DiscoveryPatterns":[],"Assets":[],"Endpoints":[]}