feat(publish service): Implement push-based publish service to a webhook

[Slider0007]

Add push-based publish service to a webhook (HTTP / HTTPS)

Features:

• Push sequence data and results to a webhook
• Push meter image to same webhook as data were pushed to (if configured)
  --> Request can be linked to respective data with provided unix epoch timestamp
• Support HTTP basic authentication and TLS encryption (Supports TLS v1.2 only)

Detailed webhook API description and respective webhook parameter description can be found in repository docs folder and in WebUI > System > Documentation

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Functionality is inspired and derived from jomjol#3163 and jomjol#3174. Thanks to @RaHehl for the template 👍

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Usage before based on ESP32:
RAM: [= ] 13.9% (used 45664 bytes from 327680 bytes)
Flash: [========= ] 86.6% (used 1684381 bytes from 1945600 bytes)

Usage after:
RAM: [= ] 14.1% (used 46088 bytes from 327680 bytes)
Flash: [========= ] 87.0% (used 1692481 bytes from 1945600 bytes)