add formatting task and cli tool

Author: fuzzzerd

.config/dotnet-tools.json

@@ -0,0 +1,12 @@
+{
+  "version": 1,
+  "isRoot": true,
+  "tools": {
+    "xamlstyler.console": {
+      "version": "3.2206.4",
+      "commands": [
+        "xstyler"
+      ]
+    }
+  }
+}

.vscode/tasks.json

@@ -36,6 +36,12 @@
                 "${workspaceFolder}/SharpFM.sln"
             ],
             "problemMatcher": "$msCompile"
+        },
+        {
+            "label": "xstyler",
+            "type": "shell",
+            "command": "dotnet xstyler -f ${file} --ignore",
+            "problemMatcher": []
         }
     ]
 }