Update agent landing page and readme #4807

Job	Run time
Build unsigned snapshot	3m 46s
Lint	43s
Component Tests	46s
Unit Tests	3m 26s
Build Grafana Dashboard Example	31s
Build signed snapshot	6m 2s
Performance Tests	7m 11s
Integration Tests (rockylinux, 8)	5m 47s
Integration Tests - Official OSS Images (bookworm, stable, debian)	3m 8s
Integration Tests (rockylinux, 9)	4m 35s
Integration Tests - Official OSS Images (bookworm, mainline, debian)	3m 35s
Integration Tests - Official Plus Images (alpine, 3.20, r32, alpine, /nginx-plus/agent)	3m 23s
Integration Tests (almalinux, 8)	4m 49s
Integration Tests - Official OSS Images (alpine, stable, alpine)	3m 11s
Integration Tests - Official Plus Images (alpine, 3.19, r31, alpine, /nginx-plus/agent)	3m 19s
Integration Tests (almalinux, 9)	4m 28s
Integration Tests - Official OSS Images (alpine, mainline, alpine)	3m 13s
Integration Tests - Official Plus Images (debian, bookworm, r32, debian, /nginx-plus/agent)	3m 15s
Integration Tests - Official Plus Images (debian, bookworm, r31, debian, /nginx-plus/agent)	3m 24s
Integration Tests (amazonlinux, 2)	5m 39s
Integration Tests (amazonlinux, 2023)	4m 59s
Integration Tests (oraclelinux, 8)	6m 15s
Integration Tests (oraclelinux, 9)	5m 15s
Integration Tests (ubuntu, 24.04)	3m 15s
Integration Tests (alpine, 3.17)	2m 59s
Integration Tests (alpine, 3.18)	3m 12s
Integration Tests (alpine, 3.19)	2m 49s
Integration Tests (alpine, 3.20)	3m 4s
Integration Tests (debian, bullseye-slim)	3m 27s
Integration Tests (debian, bookworm-slim)	3m 18s
trigger-release-workflow	0s
	1h 52m 44s

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