Add GitHub update checker and installer

sing-box.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -1,5 +1,5 @@
 {
-  "originHash" : "1e51842f566cb5b99c8ac7575b8910b65467e19dda2da9562c06bf365e78c2e9",
+  "originHash" : "8da21fbbe117848311fb8e66b6d976022dc80720a4c3ace8c3db96e20d68e580",
   "pins" : [
     {
       "identity" : "binarycodable",
@@ -55,6 +55,15 @@
         "version" : "6.29.3"
       }
     },
+    {
+      "identity" : "networkimage",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/gonzalezreal/NetworkImage",
+      "state" : {
+        "revision" : "2849f5323265386e200484b0d0f896e73c3411b9",
+        "version" : "6.0.1"
+      }
+    },
     {
       "identity" : "qrcode",
       "kind" : "remoteSourceControl",
@@ -73,6 +82,15 @@
         "version" : "2.0.0"
       }
     },
+    {
+      "identity" : "swift-cmark",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/swiftlang/swift-cmark",
+      "state" : {
+        "revision" : "5d9bdaa4228b381639fff09403e39a04926e2dbe",
+        "version" : "0.7.1"
+      }
+    },
     {
       "identity" : "swift-collections",
       "kind" : "remoteSourceControl",
@@ -82,6 +100,15 @@
         "version" : "1.3.0"
       }
     },
+    {
+      "identity" : "swift-markdown-ui",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/gonzalezreal/swift-markdown-ui",
+      "state" : {
+        "revision" : "5f613358148239d0292c0cef674a3c2314737f9e",
+        "version" : "2.4.1"
+      }
+    },
     {
       "identity" : "swift-qrcode-generator",
       "kind" : "remoteSourceControl",