Move multi-provider into SDK

[toddbaert]

Move multi-provider into SDK

The multi-provider in the contrib repo should be moved into the SDK.

Requirements:

• multi-provider is moved from contribs into SDK
• multi-provider deprecated/removed in the contribs (@toddbaert or @beeme1mr can help with this)
• optionally, there may be simplifications than can be done once the multi-provider has access to SDK internals

Note:

• the multi-provider should be marked as experimental for now, using in-line docs.

[suvaidkhan]

Hey @toddbaert I'd like to contribute to this

[wichopy]

This seems interesting, if you need help or want to split the task please let me know

[suvaidkhan]

This seems interesting, if you need help or want to split the task please let me know

Hey @wichopy feel free to pick this up. I might be more interested in the Java version of this issue!