feat(config): add OpenTelemetry OTLP config for Datadog

[foukou19]

PR Description

What this PR Provides

• Describe in short sentences the goal of the PR. Use lists.
• If the PR is linked to an ADR, please provide the link.

Fixes

Review

The reviewer must double-check these points:

• The reviewer has tested the feature
• The reviewer has reviewed the implementation of the feature
• The documentation has been updated
• The feature implementation respects the Technical Doc / ADR previously produced
• The Pull Request title has a ! after the type/scope to identify the breaking
  change in the release note and ensure we will release a major version.

How to test

Please refer (copy/paste) the test section from the User Story. This should include

• The initial state: what should be the status of the system before testing
  (for example, ensure the data xxx exists in idp-back to be able to test the feature)
• What and how to test: steps to perform to test the feature
  (for example, go to page xxx, fill the xxx field and click the 'send' button)
• Expected results: what should be observed for success or failure
  (for example, there is a link in the database between component X and component Y.
  You can retrieve the information with a GET request to the API)

Breaking changes (if any)

• Data loss / modification
• API JSON schema modification (existing resource / behavior)
• Behavior modification of a component
• Others
• N/A

Context of the Breaking Change

For example: we redefined the component types list in the DPAC referential

Result of the Breaking Change

For example: your component of type xxx will migrate to the type yyy

[github-code-quality]

Code Coverage Overview

Languages: Java

Java / code-coverage/jacoco

The overall line coverage in commit 845c0f7 in the feat/idp-core-observ... branch remains at 91%, unchanged from commit 98f5452 in the main branch.

Show a line coverage summary of the most impacted files.

File	main 98f5452	feat/idp-core-observ... 845c0f7	+/-
com/decathlon/i...ationUtils.java	87%	87%	0%
com/decathlon/i...Controller.java	0%	22%	+22%

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_{Updated October 02, 2026 19:31 UTC}

[sonarqubecloud]

Quality Gate failed

Failed conditions
22.2% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube Cloud