fix: change receiver to pointer for listener and priorityQueue

[chmouel]

• Updated receiver from value to pointer for listener methods:

  • handleEvent
  • processRes
  • detectProvider
  • writeResponse
  • isTLSEnabled

• Updated receiver from value to pointer for priorityQueue methods:

  • Len
  • Less
  • Swap

This change ensures that the methods modify the original struct instead of a copy, improving performance and correctness.

Added golangci-lint linters to check for value receivers.

Changes

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[chmouel]

we are getting a race while doing this :\