[SYS] Configuration portal for Ethernet board and HA link to config (#1761)

* [SYS] Configuration portal for Ethernet board

Enable Wifi Manager as a configuration portal for Ethernet boards, also leverage the Wifi Access point as a fallback connectivity method

Add link to the WebUI from HA and reduce key length

* Remove unnecessary environment

Now that one environment cans support wifi and ethernet, merge the 2

.github/workflows/build.yml

@@ -76,7 +76,6 @@ jobs:
           - "airm2m_core_esp32c3"
           - "lolin_c3_mini"
           - "thingpulse-espgateway"
-          - "thingpulse-espgateway-ethernet"
     runs-on: ubuntu-latest
     name: Build with PlatformIO
     steps: