Integrated Pipeline: ArchiveUnpackingFlow now unpacks archives and adds extracted paths to parsing requests

-generalized some matchers
-FileParsingTask  now takes an optional argument for the extracted file path

Integrated Pipeline: improved readability of graph stage tests, more functionality for ArchiveUnpackingFlow

Integrated Pipeline: started to make tests more flexible by using builders and matchers instead of direct case class creation and comparison

Integrated Pipeline: declared end-to-end tests for command-line directory-parsing with multiple worker threads

-moved fixtures to package object to allow sharing between working and under development tests

-arguments for command-line invocation are now displayed in the test report

Integrated Pipeline: ParsingResultsProcessorFlow pulls next element before processing the current one

-minor tweak to the zip-archive -> merged HDF5 end-to-end test to take different archive ID and
 file name into account

-improved file-existence test error messages in end-to-end tests (specify full path rather than
 just the file name)

Integrated Pipeline: tree-type validation moved from CalculationParsingEngine to CalculationParsingFlow

-now also supports zip-archives

Integrated Pipeline: CalculationParsingFlow now specifies the path to the main file for extracted zip-archive files

Integrated Pipeline: path to main file is now determined by CalculationParsingFlow and passed down from there

Integrated Pipeline: CalculationParsingFlow cleans up temporary extracted files when receiving end tree signal

Integrated Pipeline: CalculationParsingFlow extracts to be processed rawdata archives to a temporary directory

-intended to be used with with a RAMdisk filesystem in production, thus the entire archive (at most 30 GB)
 is extracted once and shared by all workers instead of extracting worker-private copies of the required
 file-trees

Integrated Pipeline: CalculationParsingFlow now validates that no parsing requests arive after the tree end signal

Integrated Pipeline: CalculationParsngFlow now validates that the tree start signal arrives before the parsing requests

-input from the tree summary inlet is silently discarded, the inlet will be removed

-CalculationParsingFlow now sends tree start/end signals to its outlet instead of discarding them
-ParsingResultsProcessorFlow silently discards incoming tree start/end signals

Integrated Pipeline: generalized FileParsingTask into FileParsingTaskSignal trait to allow multiple message types in stream