Adds toolchain file for Raspberry Pi 5 #945

Job	Run time
Build static on ubuntu-latest	1m 0s
build-macos (macos-13)	1m 8s
Build on ubuntu-20.04 g++-9	1m 10s
build-macos (macos-latest)	27s
Build on ubuntu-20.04 g++-10	1m 7s
build-windows	2m 6s
Build on ubuntu-22.04 g++-11	1m 13s
Build on ubuntu-22.04 g++-12	1m 35s
Build on ubuntu-24.04 g++-13	1m 28s
Build on ubuntu-24.04 g++-14	1m 27s
Build on ubuntu-20.04 clang-10	1m 26s
Build on ubuntu-20.04 clang-11	1m 4s
Build on ubuntu-22.04 clang-12	1m 19s
Build on ubuntu-22.04 clang-13	2m 33s
Build on ubuntu-22.04 clang-14	1m 4s
Build on ubuntu20.04 aarch64 g++-9	8m 19s
Build on ubuntu-22.04 clang-15	1m 3s
Build on ubuntu20.04 aarch64 g++-10	5m 26s
Build on ubuntu-24.04 clang-16	1m 21s
Build on ubuntu22.04 aarch64 g++-12	7m 57s
Build on ubuntu-24.04 clang-17	1m 13s
Build on ubuntu20.04 aarch64 clang-9	11m 36s
Build on ubuntu-24.04 clang-18	1m 7s
Build on ubuntu20.04 aarch64 clang-10	11m 59s
Build on ubuntu22.04 aarch64 clang-14	8m 20s
Build on ubuntu22.04 aarch64 clang-15	11m 1s
Build on ubuntu22.04 armv7 g++	5m 28s
Build on ubuntu22.04 ppc64le g++-12	5m 10s
Build on ubuntu22.04 s390x g++-12	4m 19s
Build on ubuntu22.04 riscv64 g++-12	4m 44s
	1h 49m 10s

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