Research CI capacity/load feasibility of running GCC test suite

Description

We want to run the GCC integrated test suite in our CI to test when a GCC toolchain is updated. Toolchain tests take a long time to run. We need to decided if the entire test suite will be run or a subset of it along with how frequently it should be run.

On top of this, we will want to integrate this with the Oniro ABI checker (&99 (closed)) to check if an ABI is changed with the new version of the toolchain.