Update agent landing page and readme #4815

Job	Run time
Component Tests	53s
Build unsigned snapshot	3m 41s
Lint	36s
Unit Tests	3m 8s
Build Grafana Dashboard Example	39s
Build signed snapshot	6m 23s
Performance Tests	7m 11s
Integration Tests - Official OSS Images (bookworm, stable, debian)	3m 34s
Integration Tests - Official Plus Images (alpine, 3.20, r32, alpine, /nginx-plus/agent)	3m 24s
Integration Tests - Official OSS Images (bookworm, mainline, debian)	3m 26s
Integration Tests (rockylinux, 8)	5m 15s
Integration Tests - Official Plus Images (alpine, 3.19, r31, alpine, /nginx-plus/agent)	3m 22s
Integration Tests - Official OSS Images (alpine, stable, alpine)	3m 14s
Integration Tests (rockylinux, 9)	4m 55s
Integration Tests - Official Plus Images (debian, bookworm, r32, debian, /nginx-plus/agent)	3m 26s
Integration Tests - Official OSS Images (alpine, mainline, alpine)	3m 17s
Integration Tests (almalinux, 8)	4m 53s
Integration Tests - Official Plus Images (debian, bookworm, r31, debian, /nginx-plus/agent)	3m 27s
Integration Tests (almalinux, 9)	4m 36s
Integration Tests (amazonlinux, 2)	5m 29s
Integration Tests (amazonlinux, 2023)	5m 7s
Integration Tests (oraclelinux, 8)	6m 15s
Integration Tests (oraclelinux, 9)	5m 36s
Integration Tests (ubuntu, 24.04)	3m 18s
Integration Tests (alpine, 3.17)	2m 59s
Integration Tests (alpine, 3.18)	2m 49s
Integration Tests (alpine, 3.19)	3m 5s
Integration Tests (alpine, 3.20)	3m 5s
Integration Tests (debian, bullseye-slim)	3m 20s
Integration Tests (debian, bookworm-slim)	3m 12s
trigger-release-workflow	0s
	1h 53m 35s

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