Add triage crash tool

The changes are made to integrate crashwalk tool to generate a reportable output from afl fuzzing tool.

External Tools used:

1. git
2. gdb
3. https://github.com/jfoote/exploitable.git
4. github.com/bnagy/crashwalk crashwalk

Refer: https://gitlab.com/gitlab-org/security-products/analyzers/gitlab-cov-fuzz-src/-/merge_requests/10