Add config apply request queue #4446

Job	Run time
Performance Tests	4m 40s
Build Unsigned Snapshot	1m 46s
Lint	3m 59s
Unit tests with race condition detection	2m 30s
Unit Tests	2m 3s
Integration Tests (ubuntu, 22.04)	8m 49s
Integration Tests - Official Plus Images (alpine, 3.20, r32, alpine, /nginx-plus/agent)	4m 40s
Load Tests	4m 19s
Integration Tests - Official Plus Images (alpine, 3.19, r31, alpine, /nginx-plus/agent)	4m 49s
Integration Tests - Official OSS Images (bookworm, stable, debian)	5m 1s
Integration Tests (redhatenterprise, 9)	7m 26s
Integration Tests - Official Plus Images (debian, bookworm, r32, debian, /nginx-plus/agent)	4m 56s
Integration Tests - Official OSS Images (bookworm, mainline, debian)	5m 2s
Integration Tests (alpine, 3.19)	5m 38s
Integration Tests - Official Plus Images (debian, bookworm, r31, debian, /nginx-plus/agent)	5m 6s
Integration Tests - Official OSS Images (alpine, stable, alpine)	4m 46s
Integration Tests - Official OSS Images (alpine, mainline, alpine)	4m 47s
Publish NGINX Agent v3 packages	0s
	1h 20m 17s

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