2021-02-09-Add-main-module-to-manifest.md

title	issue
Add main module to app manifest	NEXT-13986

Core

• Added new element main-module to admin section in app manifests.

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Administration

• Changed behaviour of shopwareExtensionService to return link to main module instead of first module defined
• Changed properties of sw-my-aps-page. Module name is not required anymore.
• Changed behaviour sw-my-aps-page. If moduleName is omitted the main module is loaded.