Add context menu providing:
"Escape Selection" Apply QRegularExpression::escape() to selection
"Paste from Code" Paste from C++
"Copy to Code" (for completeness)
Task-number: QTBUG-60635
Change-Id: Iee15c2243c7d0435b623dde4a1b26249aecd0553
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>