Fiducia toolchain releases

Each version ships fic and fire in one tarball per platform. See the installation guide.

v2.15.9

• fic-linux-x86-64-2.15.9.tar.gz
• fic-macos-arm64-2.15.9.tar.gz

v2.3.0

• fic-linux-x86-64-2.3.0.tar.gz
• fic-macos-arm64-2.3.0.tar.gz

v1.12.3

• fic-linux-x86-64-1.12.3.tar.gz
• fic-macos-arm64-1.12.3.tar.gz