Update package sources

Author: mattbrailsford

NuGet.config

@@ -2,6 +2,24 @@
 <configuration>
   <packageSources>
     <add key="nuget.org" value="https://www.nuget.org/api/v2/" />
-    <add key="UmbracoCommerceUnstable" value="https://pkgs.dev.azure.com/umbraco/4b02471a-69c1-43bf-a84c-e1e4e11bbf24/_packaging/Umbraco.Commerce/nuget/v3/index.json" />
+    <add key="Umbraco Prereleases" value="https://www.myget.org/F/umbracoprereleases/api/v3/index.json" />
+    <add key="Umbraco Nightly" value="https://www.myget.org/F/umbraconightly/api/v3/index.json" />
+    <add key="Umbraco Commerce Unstable" value="https://pkgs.dev.azure.com/umbraco/4b02471a-69c1-43bf-a84c-e1e4e11bbf24/_packaging/Umbraco.Commerce/nuget/v3/index.json" />
   </packageSources>
+  <packageSourceMapping>
+    <packageSource key="nuget.org">
+      <package pattern="Umbraco.*" />
+      <package pattern="*" />
+    </packageSource>
+    <packageSource key="Umbraco Prereleases">
+      <package pattern="Umbraco.*" />
+    </packageSource>
+  <packageSource key="Umbraco Nightly">
+      <package pattern="Umbraco.*" />
+    </packageSource>
+  </packageSourceMapping>
+  <packageSource key="Umbraco Commerce Unstable">
+      <package pattern="Umbraco.Commerce.*" />
+    </packageSource>
+  </packageSourceMapping>
 </configuration>