Add example Unity Project

Example Unity Project/Library/PackageCache/com.unity.sysroot@2.0.5/Tests/.tests.json

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+{
+	"createSeparatePackage": false
+}

Example Unity Project/Library/PackageCache/com.unity.sysroot@2.0.5/Tests/Editor.meta

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+fileFormatVersion: 2
+guid: 4cac27dd0398cfe66aa1f1eb45442a1a
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Example Unity Project/Library/PackageCache/com.unity.sysroot@2.0.5/Tests/Editor/EditorExampleTest.cs

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+using UnityEngine;
+using UnityEditor;
+using UnityEngine.TestTools;
+using NUnit.Framework;
+using System.Collections;
+
+class EditorExampleTest {
+
+	[Test]
+	public void EditorSampleTestSimplePasses() {
+		// Use the Assert class to test conditions.
+	}
+
+	// A UnityTest behaves like a coroutine in PlayMode
+	// and allows you to yield null to skip a frame in EditMode
+	[UnityTest]
+	public IEnumerator EditorSampleTestWithEnumeratorPasses() {
+		// Use the Assert class to test conditions.
+		// yield to skip a frame
+		yield return null;
+	}
+}

Example Unity Project/Library/PackageCache/com.unity.sysroot@2.0.5/Tests/Editor/EditorExampleTest.cs.meta

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+guid: 94da573212a9b3278a42dcd34fba767b
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Example Unity Project/Library/PackageCache/com.unity.sysroot@2.0.5/Tests/Editor/Unity.Sysroot.EditorTests.asmdef

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+{
+    "name": "Unity.Sysroot.EditorTests",
+    "references": [
+        "Unity.Sysroot.Editor",
+        "Unity.Sysroot"
+    ],
+    "optionalUnityReferences": [
+        "TestAssemblies"
+    ],
+    "includePlatforms": [
+        "Editor"
+    ],
+    "excludePlatforms": [],
+    "versionDefines": [
+        {
+            "name": "Unity",
+            "expression": "(0,2022.1.23f1)",
+            "define": "IL2CPP_LEGACY_API_PRESENT"
+        }
+    ]
+}

Example Unity Project/Library/PackageCache/com.unity.sysroot@2.0.5/Tests/Editor/Unity.Sysroot.EditorTests.asmdef.meta

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+fileFormatVersion: 2
+guid: 4b746f9393832b79384ac03cddf8eb94
+AssemblyDefinitionImporter:
+  externalObjects: {}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: