Migrate platform API clients from ipaas-core-component into this library

[jhorbulyk]

Other Feature Request

Description

Currently, a bunch of the logic to handle interactions with elastic.io's own REST API are contained within the two files platformApiLogicClient.js and platformApiRestClient.js within the ipaas-core-component. Ideally, we should migrate these files to this library so that this logic can be used for other purposes.

[stas-fomenko]

was not merged, as componet not prod ready