MDBF-1195: Define C/ODBC ASAN/UBSAN builders

[RazvanLiviuVarzaru]

As per:

• https://buildbot.mariadb.net/buildbot/builders/codbc-linux-amd64-asan
• https://buildbot.mariadb.net/buildbot/builders/codbc-linux-amd64-ubsan

[grooverdan]

I know its migration but there's a chance to improve the situation:

• ASAN and UBSAN can be instrumented together in the same builder like the server
• gcc is a older and more limited ASAN/UBSAN, tested with the msan-clang-22 container and on the ODBC side anyway - there's ODBC-489 and CONC-813.
• the compiler itself highlight a number of warnings not visible by gcc

The code fixes for these failures aren't extreme, so we could make the block MDBF-1195.

I haven't yet run the pure C/C test on ASAN/UBSAN clang-22.

[RazvanLiviuVarzaru]

Right! I knew you are the go to person on asan/ubsan, thanks for opening the discussion on improvements!
Let's see what Lawrin has to say about.