Add IPv6 Support for esp32

[Xavierhorwood]

This enables IPv6 over WiFi for esp32 based variants.

https://github.com/meshtastic/esp32_https_server/pull/6 this part of this PR

🤝 Attestations

• [x] I have tested that my proposed changes behave as described.
• [x] I have tested that my proposed changes do not cause any obvious regressions on the following devices:
  • [ ] Heltec (Lora32) V3
  • [ ] LilyGo T-Deck
  • [x] LilyGo T-Beam
  • [ ] RAK WisBlock 4631
  • [ ] Seeed Studio T-1000E tracker card
  • [ ] Other (please specify below)