feat(partnerNetwork): Get data from partner network pool by portal backend (#61)

[tfjanjua]

Description

Developed an API in portal-backend to get data from partner-network-pool instead of calling business-partner-pool service directly from the portal-frontend.

Why

This approach will make it consistent and secure, as we are already been calling business-partner-pool service from portal-backed to get legal-entity data by BPN.

Issue

Ref: #1079

Corresponding Configuration PR

eclipse-tractusx/portal#461

Checklist

• I have followed the contributing guidelines
• I have performed a self-review of my own code
• I have successfully tested my changes locally
• I have added tests that prove my changes work
• I have checked that new and existing tests pass locally with my changes
• I have commented my code, particularly in hard-to-understand areas

[MaximilianHauer]

before merging/approving please look into the comment of the issue #1079

[sonarcloud]

Quality Gate passed

Issues
11 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 SonarCloud

[ntruchsess]

This is not doing anything else than mapping BpdmPartnerNetworkData to PartnerNetworkResponse. No access to portal db is done, this implements more or less a reverse proxy. From my point of view @oyo 's comment #1079 (comment) is valid and the implementation of a reverse-proxy should be considered.