JST SH: Add MPNs with 'suction cap' attribute and 'JST ' dev prefix

[nbes4]

This PR adds:

• MPNs for the BM variants that have a 'suction cap', indicated by an appended 'T' to the non-'suction cap' MPN
• A StringAttribute FEATURES 'Suction Cap' for the new MPNs
• Prefix all devices with 'JST ' (mind the whitespace)

Discussions about the changes: https://github.com/LibrePCB/librepcb-parts-generator/pull/127#issuecomment-2079003507 ('suction cap' MPNs) https://github.com/LibrePCB-Libraries/JST.lplib/pull/5#issuecomment-2114075846 (JST prefix)

[nbes4]

Thanks for the swift review, I implemented your feedback!

[ubruhin]

Alright, I'd say this looks good now! :muscle:

Could you open the corresponding PR on the library repository?

[nbes4]

Done, there you go https://github.com/LibrePCB-Libraries/JST.lplib/pull/6 🚀

[ubruhin]

Library PR merged :muscle: Thank you!