feat: deploy central-settlement services from central-ledger image

[lewisdaly]

This is an example patch which uses the central-ledger image from `mojaloop/central-ledger#1286 to run the central-settlement services.

To keep separation of services, centralsettlement services are kept separate, but use the same underlying central-ledger image.

Once mojaloop/central-ledger#1286 is merged in and deployed, we will need to apply this to Helm in order to deploy the new settlements apis and handlers.

For local testing, I've made the following change to the central-ledger and central-settlement images, which needs to be reverted before merging this PR

mojaloop/values.yaml:

image:
      registry: ""
      repository: central-ledger
      tag: local

GP tests running on my local machine:

--------------------FINAL REPORT--------------------

Test Suite:GP Tests
Environment:Development
┌───────────────────────────────────────────────────┐
│                      SUMMARY                      │
├───────────────────┬───────────────────────────────┤
│ Total assertions  │ 2714                          │
├───────────────────┼───────────────────────────────┤
│ Passed assertions │ 2714                          │
├───────────────────┼───────────────────────────────┤
│ Failed assertions │ 0                             │
├───────────────────┼───────────────────────────────┤
│ Total requests    │ 680                           │
├───────────────────┼───────────────────────────────┤
│ Total test cases  │ 153                           │
├───────────────────┼───────────────────────────────┤
│ Passed percentage │ 100.00%                       │
├───────────────────┼───────────────────────────────┤
│ Started time      │ Tue, 19 May 2026 13:44:08 GMT │
├───────────────────┼───────────────────────────────┤
│ Completed time    │ 2026-05-19T13:50:56.234Z      │
├───────────────────┼───────────────────────────────┤
│ Runtime duration  │ 407986 ms                     │
└───────────────────┴───────────────────────────────┘

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
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

[sonarqubecloud]

Quality Gate passed

Issues
1 New issue
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