Added package icon in CommandBridge.csproj

Added a new icon for the package in the `CommandBridge.csproj` file. The path to the icon file is specified by the new line `<PackageIcon>content\icon.png</PackageIcon>`.

Author: sroei

src/CommandBridge/CommandBridge.csproj

@@ -13,6 +13,7 @@
 		<PackageId>CommandBridge</PackageId>
 		<Title>CommandBridge</Title>
 		<PackageProjectUrl>https://github.com/g4-api/command-bridge</PackageProjectUrl>
+		<PackageIcon>content\icon.png</PackageIcon>
 		<Authors>G4 API Community</Authors>
 		<PackageRequireLicenseAcceptance>true</PackageRequireLicenseAcceptance>
 		<PackageLicenseExpression>Apache-2.0+</PackageLicenseExpression>