Refactor CoreModule project structure

Replaced `README.md` with `Core-README.md` in the `CoreModule` project and updated the solution file to reflect this change. Removed the `Core-API.http` file from the `SolutionItems` section. These changes improve file organization and clarify the purpose of project files.

Author: vip32

BridgingIT.DevKit.Examples.GettingStarted.sln

@@ -26,7 +26,7 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "CoreModule", "CoreModule", "{C8C69834-9EA3-41C0-8FD2-C3B682A8491D}"
 	ProjectSection(SolutionItems) = preProject
 		src\Modules\CoreModule\Core-API.http = src\Modules\CoreModule\Core-API.http
-		src\Modules\CoreModule\README.md = src\Modules\CoreModule\README.md
+		src\Modules\CoreModule\Core-README.md = src\Modules\CoreModule\Core-README.md
 	EndProjectSection
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CoreModule.Application", "src\Modules\CoreModule\CoreModule.Application\CoreModule.Application.csproj", "{14FDE655-849B-46E9-8380-AB3DEA1E68E2}"