MDF writing functionallity for Moore

To be able to write MDF files from HLT2, output_raw_location option is added to save everything in one RawBank. Updated writers to allow creating new rawevents when none exists.

• Use DataObjectWriteHandle for raw bank writers.
• Make HltSelReportsWriter a Transformer to RawEvent.
• Fix logic bugs in HltSelReportsWriter with error cases (the processing should stop when the data can't be handled but did not).
• Move and tweak root_copy_input_writer, format_output_location and tests from Moore.
• (miscellaneous) Silence git init for Git >=2.30

Goes together with Moore!770 (merged) and MooreAnalysis!32 (merged)

See Moore#228 (closed)