Add rocGDB, dbgapi and rocr debug agent to theROCK

[amd-aakash]

Source code

• rocGDB will be a separate repo
• dbgapi and rocr_debug_agent will be projects in rocm-systems

Build Instructions

• theROCK cmakelists need to be enhanced

Packages

• theROCK nightly and release artifacts should include the component & test binaries

CI ecosystem

• per PR checks in theROCK

[jayhawk-commits]

PR opened #2051

[lumachad]

Please see #2231. I'll close #2051.