[receiver/apachespark] Add apachespark scraping accumulators

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Component(s)

No response

Is your feature request related to a problem? Please describe.

Spark has accumulators which are not scrapped:

"accumulatorUpdates" : [ {
    "id" : 445,
    "name" : "Perform preparations",
    "value" : "855"
  }]

Accumulators reference:
https://pluginhighway.ca/blog/speed-up-your-spark-job-with-accumulators-an-ultimate-guide
https://spark.apache.org/docs/latest/api/python/_modules/pyspark/accumulators.html
https://sparkbyexamples.com/pyspark/pyspark-accumulator-with-example/

Describe the solution you'd like

Collect accumulators and send as metrics

Describe alternatives you've considered

No response

Additional context

No response

[petern48]

/label receiver/apachesparkreceiver

[github-actions]

Pinging code owners for receiver/apachespark: @Caleb-Hurshman @mrsillydog. See Adding Labels via Comments if you do not have permissions to add labels yourself. For example, comment '/label priority:p2 -needs-triaged' to set the priority and remove the needs-triaged label.