Annotation- and source less code generation

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With the release of QtJenny 1.0, annotations are necessary to fully generate the C++ proxies.
However, Jenny 1.1 will introduce a new feature that allows for the generation of these proxies without the need for manual annotation of Android classes. This task aims to remove the dependency on the annotation processor and instead utilize the imported Android packages.

By adding functionality to read from the jar file location (Library path) and implementing reflection-based processing, we can generate C++ wrappers without the need for explicit class/field annotations.