[CWS] onboard first batch of fs constants to the fetcher

[paulcacheux]

What does this PR do?

This PR onboards a first batch of constant to the offset fetcher system, ensuring we reliably read at the correct offset.

Motivation

Describe how you validated your changes

Possible Drawbacks / Trade-offs

Additional Notes

[agent-platform-auto-pr]

Uncompressed package size comparison

Comparison with ancestor 4373b4ebe4ab3b683c2ed7f4f666e91d6b78d70a

Diff per package

package	diff	status	size	ancestor	threshold
datadog-agent-arm64-deb	0.16MB	⚠️	940.54MB	940.38MB	140.00MB
datadog-agent-aarch64-rpm	0.16MB	⚠️	949.84MB	949.68MB	140.00MB
datadog-agent-x86_64-rpm	0.16MB	⚠️	1207.49MB	1207.33MB	140.00MB
datadog-agent-x86_64-suse	0.16MB	⚠️	1207.49MB	1207.33MB	140.00MB
datadog-agent-amd64-deb	0.16MB	⚠️	1198.17MB	1198.01MB	140.00MB
datadog-dogstatsd-amd64-deb	0.00MB	✅	79.00MB	79.00MB	10.00MB
datadog-dogstatsd-x86_64-rpm	0.00MB	✅	79.08MB	79.08MB	10.00MB
datadog-dogstatsd-x86_64-suse	0.00MB	✅	79.08MB	79.08MB	10.00MB
datadog-dogstatsd-arm64-deb	0.00MB	✅	56.11MB	56.11MB	10.00MB
datadog-heroku-agent-amd64-deb	0.00MB	✅	506.12MB	506.12MB	70.00MB
datadog-iot-agent-amd64-deb	0.00MB	✅	113.78MB	113.78MB	10.00MB
datadog-iot-agent-x86_64-rpm	0.00MB	✅	113.85MB	113.85MB	10.00MB
datadog-iot-agent-x86_64-suse	0.00MB	✅	113.85MB	113.85MB	10.00MB
datadog-iot-agent-arm64-deb	0.00MB	✅	109.23MB	109.23MB	10.00MB
datadog-iot-agent-aarch64-rpm	0.00MB	✅	109.30MB	109.30MB	10.00MB

Decision

⚠️ Warning

[agent-platform-auto-pr]

Test changes on VM

Use this command from test-infra-definitions to manually test this PR changes on a VM:

inv aws.create-vm --pipeline-id=52252920 --os-family=ubuntu

Note: This applies to commit fdccada

[paulcacheux]

/merge

[dd-devflow]

Devflow running: /merge

View all feedbacks in Devflow UI.

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2025-01-06 16:51:51 UTC ℹ️ MergeQueue: waiting for PR to be ready

This merge request is not mergeable yet, because of pending checks/missing approvals. It will be added to the queue as soon as checks pass and/or get approvals.
Note: if you pushed new commits since the last approval, you may need additional approval.
You can remove it from the waiting list with /remove command.

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2025-01-06 18:34:24 UTC ℹ️ MergeQueue: merge request added to the queue

The median merge time in main is 35m.

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2025-01-06 19:10:45 UTC ℹ️ MergeQueue: This merge request was merged