Adding a click action to oh-gauge

[TheGreyDiamond]

The problem

The gauge widget does not support adding a click action.

Your suggestion

I would suggest adding a click action to the oh-gauge widget. It would make a few things better, as you are for example able to open a graph page, etc.

Your environment

untimeInfo:
  version: 3.0.2
  buildString: Release Build
locale: de-DE
systemInfo:
  configFolder: /etc/openhab
  userdataFolder: /var/lib/openhab
  logFolder: /var/log/openhab
  javaVersion: 11.0.9.1
  javaVendor: Raspbian
  osName: Linux
  osVersion: 5.10.17-v7l+
  osArchitecture: arm
  availableProcessors: 4
  freeMemory: 88392072
  totalMemory: 290455552
clientInfo:
  device:
    ios: false
    android: false
    androidChrome: false
    desktop: true
    iphone: false
    ipod: false
    ipad: false
    edge: false
    ie: false
    firefox: false
    macos: false
    windows: true
    cordova: false
    phonegap: false
    electron: false
    nwjs: false
    webView: false
    webview: false
    standalone: false
    os: windows
    pixelRatio: 1
    prefersColorScheme: light
  isSecureContext: false
  locationbarVisible: true
  menubarVisible: true
  navigator:
    cookieEnabled: true
    deviceMemory: N/A
    hardwareConcurrency: 10
    language: en-US
    languages:
      - en-US
      - en
      - de
    onLine: true
    platform: Win32
  screen:
    width: 1920
    height: 1080
    colorDepth: 24
  support:
    touch: false
    pointerEvents: true
    observer: true
    passiveListener: true
    gestures: false
    intersectionObserver: true
  themeOptions:
    dark: light
    filled: true
    pageTransitionAnimation: default
    bars: filled
    homeNavbar: default
    homeBackground: default
    expandableCardAnimation: default
  userAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML,
    like Gecko) Chrome/91.0.4472.106 Safari/537.36
timestamp: 2021-06-19T14:37:53.610Z

Additional information

I started to try to implement it here: https://github.com/TheGreyDiamond/openhab-webui/tree/oh-guage-clickAction

[TheGreyDiamond]

Addressed in #1175 , now waiting for review