Add solution configuration and tooling

- .gitignore for .NET/Blazor project
- VS Code launch and task configurations
- Solution file (Duempelkas.slnx)
- NuGet configuration

.vscode/launch.json

@@ -0,0 +1,16 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": ".NET Core Launch (Desktop)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            "program": "${workspaceFolder}/src/Duempelkas.Desktop/bin/Debug/net10.0/Duempelkas.Desktop.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}/src/Duempelkas.Desktop",
+            "stopAtEntry": false,
+            "console": "internalConsole"
+        }
+    ]
+}

.vscode/tasks.json

@@ -0,0 +1,70 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/Duempelkas.slnx"
+            ],
+            "problemMatcher": "$msCompile",
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "options": {
+                "statusbar": {
+                    "label": "$(tools) Build",
+                    "color": "#3a96ff",
+                    "detail": "Build the solution"
+                }
+            }
+        },
+        {
+            "label": "watch",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "watch",
+                "run",
+                "--project",
+                "${workspaceFolder}/src/Duempelkas.Desktop/Duempelkas.Desktop.csproj"
+            ],
+            "problemMatcher": "$msCompile",
+            "isBackground": true,
+            "options": {
+                "statusbar": {
+                    "label": "$(eye) Watch",
+                    "color": "#f7df06",
+                    "detail": "Watch and Run Desktop"
+                }
+            }
+        },
+        {
+            "label": "Git Sub Update",
+            "type": "shell",
+            "command": "git submodule update --init",
+            "options": {
+                "statusbar": {
+                    "hide": false,
+                    "label": "$(arrow-circle-down) Git Sub Update",
+                    "color": "#3a96ff"
+                }
+            }
+        },
+        {
+            "label": "Git Fetch + Pull Root + Submodule Init",
+            "type": "shell",
+            "command": "git fetch; git pull; git submodule update --init",
+            "options": {
+                "statusbar": {
+                    "hide": false,
+                    "label": "$(arrow-circle-down) Git Fetch/Pull + Submodules",
+                    "color": "#3a96ff"
+                }
+            }
+        }
+    ]
+}