Add read only file plugin #5335

Job	Run time
Unit Tests	2m 22s
Unit tests with race condition detection	2m 49s
Lint	4m 45s
Build Unsigned Snapshot	2m 14s
Performance Tests	4m 56s
Integration Tests (redhatenterprise, 9)	8m 41s
Integration Tests (alpine, 3.19)	7m 3s
Integration Tests - Official Plus Images (alpine, 3.19, r31, alpine, /nginx-plus/agent)	7m 13s
Integration Tests - Official Plus Images (alpine, 3.20, r32, alpine, /nginx-plus/agent)	7m 31s
Integration Tests - Official Plus Images (debian, bookworm, r31, debian, /nginx-plus/agent)	7m 37s
Integration Tests - Official Plus Images (debian, bookworm, r32, debian, /nginx-plus/agent)	7m 49s
Integration Tests - Official OSS Images (alpine, stable, alpine)	7m 22s
Integration Tests - Official OSS Images (bookworm, mainline, debian)	7m 35s
Integration Tests - Official OSS Images (alpine, mainline, alpine)	7m 30s
Integration Tests - Official OSS Images (bookworm, stable, debian)	7m 34s
Load Tests	4m 57s
	1h 37m 58s

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