Add Anvil Studio 2020.12.03 (#535)

* Add AnvilStudio 2020.04.03

* Update AnvilStudio manifest to multi file format

* Fix indentation

Co-authored-by: chausner <chausner@users.noreply.github.com>

manifests/w/WillowSoftware/AnvilStudio/2020.12.03/WillowSoftware.AnvilStudio.installer.yaml

@@ -0,0 +1,25 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.0.0.schema.json
+PackageIdentifier: WillowSoftware.AnvilStudio
+PackageVersion: 2020.12.03
+Platform:
+  - Windows.Desktop
+InstallerType: exe
+InstallModes:
+  - interactive
+  - silent
+  - silentWithProgress
+InstallerSwitches:
+  Silent: -s -sp" /quiet /norestart"
+  SilentWithProgress: -s -sp" /passive /norestart"
+InstallerSuccessCodes:
+  - 1000
+UpgradeBehavior: install
+Installers:
+  - Architecture: x86
+    InstallerUrl: http://anvilstudio.com/x/asinstall.exe
+    InstallerSha256: C0BAB80CCE23F43C5CEBF7ABF596F1C52D67467357FD6C6E5BF983D6E876C9B0
+  - Architecture: x64
+    InstallerUrl: http://anvilstudio.com/x64/asinstall.exe
+    InstallerSha256: C2C8735C0E887C59E2C9FA0490E62083E407645C5E1552493E4517D40AFC12BC
+ManifestType: installer
+ManifestVersion: 1.0.0