Remove unused packages. Generate editor config. Code cleanup.

Packages/manifest.json

@@ -1,11 +1,8 @@
 {
   "dependencies": {
     "com.unity.2d.sprite": "1.0.0",
-    "com.unity.ide.rider": "3.0.15",
     "com.unity.ide.visualstudio": "2.0.16",
-    "com.unity.ide.vscode": "1.2.5",
     "com.unity.nuget.newtonsoft-json": "3.0.2",
-    "com.unity.textmeshpro": "3.0.6",
     "com.unity.ugui": "1.0.0",
     "com.unity.modules.androidjni": "1.0.0",
     "com.unity.modules.animation": "1.0.0",

Packages/packages-lock.json

@@ -8,20 +8,11 @@
     },
     "com.unity.ext.nunit": {
       "version": "1.0.6",
-      "depth": 1,
+      "depth": 2,
       "source": "registry",
       "dependencies": {},
       "url": "https://packages.unity.cn"
     },
-    "com.unity.ide.rider": {
-      "version": "3.0.15",
-      "depth": 0,
-      "source": "registry",
-      "dependencies": {
-        "com.unity.ext.nunit": "1.0.6"
-      },
-      "url": "https://packages.unity.cn"
-    },
     "com.unity.ide.visualstudio": {
       "version": "2.0.16",
       "depth": 0,
@@ -31,13 +22,6 @@
       },
       "url": "https://packages.unity.cn"
     },
-    "com.unity.ide.vscode": {
-      "version": "1.2.5",
-      "depth": 0,
-      "source": "registry",
-      "dependencies": {},
-      "url": "https://packages.unity.cn"
-    },
     "com.unity.nuget.newtonsoft-json": {
       "version": "3.0.2",
       "depth": 0,
@@ -56,15 +40,6 @@
       },
       "url": "https://packages.unity.cn"
     },
-    "com.unity.textmeshpro": {
-      "version": "3.0.6",
-      "depth": 0,
-      "source": "registry",
-      "dependencies": {
-        "com.unity.ugui": "1.0.0"
-      },
-      "url": "https://packages.unity.cn"
-    },
     "com.unity.ugui": {
       "version": "1.0.0",
       "depth": 0,