Support configurable SOT-25 footprints

[seveibar]

Summary

• make the SOT-25 w parameter control the total copper span while preserving the historical default geometry
• support the _rot180 suffix for SOT-25 footprints
• rotate pads, silkscreen, reference text, and courtyard together
• add exact pad-geometry coverage for the AP2112K footprint used by abse/gameboy

Why

The AP2112K-3.3 regulator footprint in tscircuit.com/abse/gameboy is a normal SOT-23-5 package, but its imported EasyEDA copper uses a 3.2 mm total span and the opposite pin-1 orientation. The existing sot25 generator hard-coded pad centers and could not express that otherwise standard footprint.

This enables the exact equivalent:

sot25_p0.95mm_w3.2mm_pw0.6mm_pl1mm_rot180

Validation

• bun test — full suite passing
• targeted SOT-23/SOT-25/parser/completeness tests — 9 passing
• bun run build
• Biome check on changed files
• git diff --check