Added UnityTechnologies.Unity v2021.1.6f1 (#12384)

* Added UnityTechnologies.Unity v2021.1.6f1

* Quality Check

+ Added Dependencies (Installer installs them)
+ The software Architecture is x86
+ The Publisher is Unity Technologies ApS
+ The PackageName is Unity 2021.1.6f1

manifests/u/UnityTechnologies/Unity/2021.1.6f1/UnityTechnologies.Unity.installer.yaml

@@ -0,0 +1,26 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.0.0.schema.json
+PackageIdentifier: UnityTechnologies.Unity
+PackageVersion: 2021.1.6f1
+MinimumOSVersion: 10.0.0.0
+Dependencies:
+  PackageDependencies:
+    - PackageIdentifier: Microsoft.VC++2010Redist-x64
+      MinimumVersion: 10.0.30319
+    - PackageIdentifier: Microsoft.VC++2013Redist-x64
+      MinimumVersion: 12.0.30501.0
+    - PackageIdentifier: Microsoft.VC++2015Redist-x64
+      MinimumVersion: 14.0.23026.0
+InstallModes:
+  - interactive
+  - silent
+  - silentWithProgress
+Installers:
+  - Architecture: x86
+    InstallerType: nullsoft
+    InstallerUrl: https://download.unity3d.com/download_unity/c0fade0cc7e9/Windows64EditorInstaller/UnitySetup64-2021.1.6f1.exe
+    InstallerSha256: 3B79FB5C1ED97CF527BA60D1412F1A0E23E9BB4173340960501F26A09AF5C104
+    Scope: machine
+    InstallerLocale: en-US
+    UpgradeBehavior: install
+ManifestType: installer
+ManifestVersion: 1.0.0