Improvement: Integrate Host Compiler GNU GCC 12.2 in S-CORE

[nradakovic]

Description

Integrate the GNU GCC 12.2 toolchain into S-CORE to verify code base with same version of compiler that is used for target builds.
The GNU GCC 12.2 toolchain is already implemented in PoC for S-CORE To enable its usage in S-CORE, we need to copy the existing implementation and adjust it accordingly. This includes:

• Create repository called toolchains_gcc;
• Migrate relevant files from dependix/toolchains_cc into eclipse-score/toolchains_gcc`;
• Updating configuration files to align with S-CORE build and runtime environment.

[nradakovic]

Currently in progress, the PR is here:
eclipse-score/toolchains_gcc#5