Fix TO-92 footprint origin

[Lathikaa-S]

Issue

The TO-92 footprint was not centered around pcbX: 0 / pcbY: 0. The body and courtyard sat above the origin, so the component/model origin did not line up cleanly with the footprint. This made the footprint look offset when compared with the 3D/model placement.

What changed

• Moved the TO-92 body so its silkscreen is centered on 0,0.
• Moved the courtyard to stay centered around the same origin.
• Placed the pads relative to the centered body, instead of applying a broad post-processing offset.
• Kept the implementation close to the existing footprinter pattern with simple coordinate changes.
• Added a regression test that checks TO-92 body and courtyard centers are at the footprint origin.
• Updated TO-92 SVG snapshots.

[mohan-bee]

i feel like the footprint moved in opposite way !!

[imrishabh18]

I am confused what is happening here, make things clear for the reviewer. The 3d snapshot should be using this footprint and not the inline one