[$50] Create proxy endpoint `GET /taas-teams/me`

[maxceem]

Create a new endpoint GET /taas-teams/me which would return details about the logged-in user form V5.

• Any logged-in user should be able to call this endpoint (same like any user can get skills)
• This endpoint should internally call endpoint GET {TC_API}/users?externalProfile.organizationId={config.ORG_ID}&externalProfile.externalId={currentUser.userId}
  • use U-Bahn M2M token to call it
• We should be able to optionally pass a query param enrich=true like GET /taas-teams/me?enrich=true, which should be passed to the u-bahn endpoint
• Instead of array GET /taas-teams/me endpoint should return one object of the user if it's found
• If the user is not found (i. e. response of u-bahn endpoint is an empty array), then return error 404
• Update Swagger
• Update Postman

Update

Removed support for enrich param as per #170

[maxceem]

Challenge https://www.topcoder.com/challenges/239aaa2c-5d28-457e-b319-850e6a8117a5 has been created for this ticket.

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[maxceem]

@imcaizheng this is ready for pickup. Please, take it at last after 2 other issues.

[maxceem]

Challenge https://www.topcoder.com/challenges/239aaa2c-5d28-457e-b319-850e6a8117a5 has been assigned to aaron2017.

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[imcaizheng]

PR created #161