Add MicroPython Tooling

[AJMansfield]

• Support for Compiler Explorer micropython/micropython#18381
• Add MicroPython Build Container misc-builder#117
• Add MicroPython Preview Builds compiler-workflows#43
• Add MicroPython Tooling #1888
• Add MicroPython Support compiler-explorer#8256

[partouf]

I was able to build 1.26, but not 1.27.0 due to Could not find remote branch v1.27.0 to clone.

[AJMansfield]

I was able to build 1.26, but not 1.27.0 due to Could not find remote branch v1.27.0 to clone.

Oh, that'd be because 1.27.0 isn't actually out yet lol. Lemme update this PR to match the set of versions I ended up with in compiler-explorer/compiler-explorer#8256.

[partouf]

Builds:

• "1.19"
• 1.19.1
• 1.20.0
• 1.21.0
• 1.22.0
• 1.22.1
• 1.22.2
• 1.23.0
• 1.24.0
• 1.24.1
• 1.25.0
• 1.26.0
• 1.26.1

[partouf]

1.19 https://github.com/compiler-explorer/infra/actions/runs/19394225032/job/55491972034 failed
1.19.1 https://github.com/compiler-explorer/infra/actions/runs/19394225255/job/55491972747 failed

[AJMansfield]

Oh, hadn't realized our build dependencies changed in the jump to 1.20.0, we can just drop the earlier versions. (Only reason for cutting off at 1.19 was that 1.18 and earlier needed a whole different set of tools with a different major revision of the bytecode format; and I guess some of those tools were still used by something or other during 1.19).