[packaging] Add crash-reporter-doc subpackage. Contributes to JB#24119
[packaging] Add crash-reporter-doc subpackage. Contributes to JB#24119

Signed-off-by: Tomi Leppänen <5c72ffe736be5009d7fd5b3f191ca04ec28863e0@jolla.com>

mer-qa/crash-reporter,mer-qa/crash-reporter,mer-qa/crash-reporter