New platform ethernet_info from component text_sensor

[gtjadsonsantos]

What does this implement/fix?

Quick description and explanation of changes

Types of changes

• [ ] Bugfix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] Other

Related issue or feature (if applicable): fixes

Pull request in esphome-docs with documentation (if applicable): esphome/esphome-docs#<esphome-docs PR number goes here>

Test Environment

• [x] ESP32
• [ ] ESP32 IDF
• [ ] ESP8266

Example entry for config.yaml:

text_sensor:
  - platform: ethernet_info
    ip_address:
      name: IP Address

Checklist:

• [x] The code change is tested and works locally.
• [x] Tests have been added to verify that the new code works (under tests/ folder).

If user exposed functionality or configuration variables are added/changed:

• [x] Documentation added/updated in esphome-docs.

[probot-esphome[bot]]

Hey there @gtjadsonsantos, Thanks for submitting this pull request! Can you add yourself as a codeowner for this integration? This way we can notify you if a bug report for this integration is reported. In __init__.py of the integration, please add:

CODEOWNERS = ["@gtjadsonsantos"]

And run script/build_codeowners.py

_{^{(message by NeedsCodeownersLabel)}}