Add middleware to support Maven-managed dependencies on Fiori Pipeline

[bbogovich-sap]

This change adds a middleware definition to support libraries with dependencies during builds on the Fiori Pipeline.

Currently the pipeline copies dependencies into the project's src directory to run test automation. This causes the framework to fail to initialize because of conflicting manifest.json files.

Since the files are already consolidated into the Maven target directory at target/dependency/META-INF/resources, using a middleware to retrieve dependency files from there instead of placing them in the src directory resolves the build failure.

[cla-assistant]

All committers have signed the CLA.

[coveralls]

coverage: 54.927% (-0.6%) from 55.544%
when pulling 88c1900 on bbogovich-sap:fix-fiori-pipeline-dependencies
into d1c932c on SAP:main.

[flovogt]

@bbogovich-sap Thanks a lot for your contribution to karma-ui5. We have analyzed your scenario in the team. As karma-ui5 is deprecated we won't add/implement features to the package. We heavily recommend to switch to a modern test runner as described in https://community.sap.com/t5/technology-blog-posts-by-sap/deprecation-of-karma-ui5-plugin/ba-p/13954060.