Add msanalyzer2tasks.pl, which does simple filtering on
the XML files.

Task-number: QTBUG-57086
Change-Id: I0ce0b1787aa54eac7cf6b3b9cdd258d5c9d62c60
Reviewed-by: Oliver Wolff <oliver.wolff@qt.io>
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>