fix: fix the .gitignore for the solution and projects

backend/.gitignore

@@ -58,7 +58,7 @@ dlldata.c
 # Benchmark Results
 BenchmarkDotNet.Artifacts/
 
-# .NET
+# .NET Core
 project.lock.json
 project.fragment.lock.json
 artifacts/
@@ -386,9 +386,6 @@ FodyWeavers.xsd
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
-*.code-workspace
-
-# Local History for Visual Studio Code
 .history/
 
 # Windows Installer files from build outputs
@@ -483,8 +480,3 @@ $RECYCLE.BIN/
 # Other IDE files
 .vscode/
 .idea/
-
-
-#AppSettings dev
-*/appsettings.Development.json
-/src/Web/appsettings.Development.json