feat: custom-api multiple API queries

[ralphocdol]

This is mainly to query multiple endpoints at once in the same custom-api, some services with API have the data you'd need, spread across multiple endpoints. Having only one kinda limits things so here we are.

You can also query different endpoints.

Sample config

- type: custom-api
  define: <redacted>
  api-queries:
    yesterday:             # <--- This will become the object name where the api response gets stored
      url: http:${WEBSERVER_URL}/api/get-sonarr-data
      parameters:
        hour-offset: 8
        day-offset: -1
      <<: *sonarr-headers
    today:
      url: http:${WEBSERVER_URL}/api/get-sonarr-data
      parameters:
        hour-offset: 8
      <<: *sonarr-headers
    freshrss:
      url: http:${FRESHRSS_API}
      <<: 
        - *freshrss-parameters
        - *freshrss-headers
  cache: 1s
  template: |
    <div> - {{ .JSON.String "yesterday.data.0.airDate" }}</div>
    <div> - {{ .JSON.String "today.data.0.airDate" }}</div>
    <div> - {{ .JSON.String "freshrss.items.0.title" }}</div>

Output: