Added "info" API endpoint to retrieve app info and configuration (to be used by the client)

[SteRiccio]

No description provided.

[Copilot]

Pull request overview

Adds a new info API endpoint intended to expose application identity/version and selected runtime configuration for client consumption, and centralizes the server app identifier constant.

Changes:

• Introduces /api/info endpoint (endpoint wiring + handler) and adds an API test for it.
• Adds EXPERIMENTAL_FEATURES env flag (ProcessEnv.experimentalFeatures) and updates .env.template.
• Adds ArenaServerConstants.appId and reuses it for 2FA otpauth issuer generation.

Reviewed changes

Copilot reviewed 12 out of 13 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/service/user2FA/user2FAService.ts	Uses ArenaServerConstants.appId instead of a local APP_NAME constant when generating the otpauth URL.
src/processEnv/index.ts	Adds ProcessEnv.experimentalFeatures sourced from EXPERIMENTAL_FEATURES.
src/model/index.ts	Re-exports ArenaServerConstants.
src/model/ArenaServerConstants.ts	Defines a central appId constant.
src/api/info/read.ts	Implements GET /api/info returning { appInfo, config }.
src/api/info/index.ts	Registers the info read route via InfoApi.
src/api/endpoint/info.ts	Adds endpoint builder for /api/info.
src/api/endpoint/index.ts	Exposes ApiEndpoint.info.
src/api/api.ts	Wires InfoApi into overall API initialization.
src/api/tests/info/index.ts	Adds a test for the info endpoint response.
src/api/tests/api.test.ts	Registers the new info test suite.
.env.template	Documents EXPERIMENTAL_FEATURES.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud