Fully matching an APK resource requires the file to be present locally,
so that its metadata can be queries. HTTP getter was matching against a
remote path so the match was failing.
The matching now happens in two stages == first partial path-only
matches are established. Secondly, all partial matches are downloaded
and final match occurs against downloaded files.
Revent files are automatically placed in the sub folder `revent_files` in the
workload directory when recording, therefore when trying to retrieve recordings
the getter now looks inside of the sub directory.
Previously trying to use the `__base_filepath` import from inside the `Package`
class, resulted in the error "`_Package__base_filepath` is not defined."
- get_by_extension was comparing the expected extension to the entire
tuple returned by os.path.splitext(), rather than just the extension
part.
- UserDirectory getter was looking in the root dependencies directory,
rather than the subdirectory for the owner.
- Filer getter was not handling non-existing paths properly.
