[MSHADE-335] Add an option to exclude the transitive dependencies from the Shaded jar

**[zosrothko](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=zosrothko)** opened **[MSHADE-335](https://issues.apache.org/jira/browse/MSHADE-335?redirect=false)** and commented

Hello

One have build a specific maven plugin to implement the functionality of the Maven Shade Plugin but without including the transitive dependencies. Producing a shaded jar without the transitive dependencies would interest people since this kind of request appears many time on StackOverflow, hence this teature request.

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No further details from [MSHADE-335](https://issues.apache.org/jira/browse/MSHADE-335?redirect=false)

The issue provides no files, tests, or entry points to inspect and only describes a broad Maven Shade Plugin feature. First clarify how transitive dependencies should be identified and excluded, then locate the relevant shading and packaging paths; done should mean a defined option produces a shaded JAR without those dependencies and has coverage for the intended behavior.

Written by the indexing model from the issue text.