Make better use of the contents of NOTICE.txt

[TTMaZa]

Hi there,

https://github.com/Azure/azure-sdk-for-java/blob/main/NOTICE.txt seems to include all the license notes of material that has been copied to some submodule.

This leads to the situation, that compiled jar-Files circulate, for which this information is really hard to track down.

Would it be an idea to split NOTICE.txt up into individual files and somehow make sure that these specific files get carried over, when these modules are compiled and distributed via maven central?

Example:
There is code copied from netty:

https://github.com/Azure/azure-sdk-for-java/blob/main/sdk/core/azure-core-http-netty/src/main/java/com/azure/core/http/netty/implementation/HttpProxyHandler.java

This led to the inclusion of this part in the NOTICE-file:
330106f#diff-7c999860b0760502ad23de0a4e834c00a54390b9dd0515908be8814ae3dd14ad

Now what I'm missing is a clear way to retrieve this Copyright in the resulting jar-File of azure-core-http-netty as it can be found here:

https://mvnrepository.com/artifact/com.azure/azure-core-http-netty/1.14.2

Let me know if this is of any interest for you.
Our current workaround is to hand over the full LICENSE.txt AND NOTICE.txt whenever we publish any submodule of azure-sdk-for-java no matter if the specific module actually contains any of the items listed in NOTICE.txt.

Best regards