internal/appsec: refactor listeners #2992

Job	Run time
Prepare Go modules cache	11s
Smoke Tests	0s
macos-latest (AppSec disabled)	43s
windows-latest (AppSec disabled)	1m 5s
linux/amd64 golang:1.23-bookworm	37s
ubuntu-latest-16-cores (AppSec disabled)	36s
macos-12 go1.23	45s
linux/arm64 golang:1.23-bookworm	1m 31s
macos-12 go1.22	1m 13s
linux/amd64 golang:1.23-bullseye	24s
macos-14 go1.23	41s
linux/arm64 golang:1.23-bullseye	1m 5s
macos-14 go1.22	21s
linux/amd64 golang:1.23-alpine	21s
linux/arm64 golang:1.23-alpine	1m 10s
linux/amd64 golang:1.22-bookworm	26s
linux/arm64 golang:1.22-bookworm	1m 33s
linux/amd64 golang:1.22-bullseye	23s
linux/arm64 golang:1.22-bullseye	1m 20s
linux/amd64 golang:1.22-alpine	26s
linux/arm64 golang:1.22-alpine	1m 3s
	15m 54s

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