add arm.com gcc 11.3, 12.2, 12.3

[partouf]

compiler-explorer/infra#1103

• AArch32 bare-metal target (arm-none-eabi)
• AArch32 GNU/Linux target with hard float (arm-none-linux-gnueabihf) <- this looks to be already available
• AArch64 bare-metal target (aarch64-none-elf)
• AArch64 GNU/Linux target (aarch64-none-linux-gnu) <- this looks to be already available
• AArch64 GNU/Linux big-endian target (aarch64_be-none-linux-gnu)

[dkm]

Should we have the displayed version match the ARM® version? Corollary: would be nice to know this is not a vanilla GCC (or something /very/ close to vanilla, as ct-ng has). Maybe this could be added in the name? I know we haven't done that systematically, but I realize that may be confusing.

[partouf]

I would like some identifying things to differentiate yes, but there's only so much space in name. There's not really an arm version as far as I can tell anymore, there used to be the year 2021 2022 etc, but they don't use that anymore.

I think I'm at least going to add a category so its at least easier to filter, but other than that I'm not very inspired

[partouf]

I'll finish this PR tomorrow, I probably won't add the others on the todo list yet