chore: fix Unity 6 shader compilation errors and 2D Pixel Perfect compatibility

Author: nattb8

sample-unity6/Packages/manifest.json

@@ -5,6 +5,7 @@
     "com.immutable.api.zkevm": "file:../../src/Packages/ZkEvmApi",
     "com.immutable.marketplace": "file:../../src/Packages/Marketplace",
     "com.immutable.passport": "file:../../src/Packages/Passport",
+    "com.unity.2d.pixel-perfect": "5.1.1",
     "com.unity.collab-proxy": "2.9.3",
     "com.unity.feature.2d": "2.0.1",
     "com.unity.ide.rider": "3.0.38",

sample-unity6/Packages/packages-lock.json

@@ -82,10 +82,12 @@
       "url": "https://packages.unity.com"
     },
     "com.unity.2d.pixel-perfect": {
-      "version": "5.0.3",
-      "depth": 1,
+      "version": "5.1.1",
+      "depth": 0,
       "source": "registry",
-      "dependencies": {},
+      "dependencies": {
+        "com.unity.modules.imgui": "1.0.0"
+      },
       "url": "https://packages.unity.com"
     },
     "com.unity.2d.psdimporter": {

sample-unity6/ProjectSettings/GraphicsSettings.asset

@@ -34,6 +34,20 @@ GraphicsSettings:
   - {fileID: 10753, guid: 0000000000000000f000000000000000, type: 0}
   - {fileID: 10770, guid: 0000000000000000f000000000000000, type: 0}
   - {fileID: 10783, guid: 0000000000000000f000000000000000, type: 0}
+  - {fileID: 4800000, guid: e6e9a19c3678ded42a3bc431ebef7dbd, type: 3}
+  - {fileID: 4800000, guid: 36e335017ad71d54fbb10842863188ae, type: 3}
+  - {fileID: 4800000, guid: da07703fcc09f8d4799221050659bd55, type: 3}
+  - {fileID: 4800000, guid: 0e9d5a909a1f7e84882a534d0d11e49f, type: 3}
+  - {fileID: 4800000, guid: 5c81372d981403744adbdda4433c9c11, type: 3}
+  - {fileID: 4800000, guid: 80aa867ac363ac043847b06ad71604cd, type: 3}
+  - {fileID: 4800000, guid: 0f4122b9a743b744abe2fb6a0a88868b, type: 3}
+  - {fileID: 4800000, guid: 5ec81c81908db34429b4f6ddecadd3bd, type: 3}
+  - {fileID: -6465566751694194690, guid: 9920c1f1781549a46ba081a2a15a16ec, type: 3}
+  - {fileID: -6465566751694194690, guid: cbd3e1cc4ae141c42a30e33b4d666a61, type: 3}
+  - {fileID: 4800000, guid: f6783ab646d374f94b199774402a5144, type: 3}
+  - {fileID: 4800000, guid: 0a7e590f3cf1d4ee8a8fab5b6eff09ef, type: 3}
+  - {fileID: 4800000, guid: 21322c8b137c66e49b86085d3c8161f6, type: 3}
+  - {fileID: 4800000, guid: 8fbe92a9edfe6074e841d6dd1509bc59, type: 3}
   m_PreloadedShaders: []
   m_PreloadShadersBatchTimeLimit: -1
   m_SpritesDefaultMaterial: {fileID: 10754, guid: 0000000000000000f000000000000000, type: 0}