[FEATURE] Add anomaly detection support

[antonisnyc94]

Can we create a terraform resource for Opensearch anomaly detection capabilities?

Thanks,
Tony

[prudhvigodithi]

Thanks @antonisnyc94
@rblcoder @afrodidact @premkirank please take a look.
Thank you

[rblcoder]

@prudhvigodithi I would like to work on this.

[prudhvigodithi]

Thanks assigned the issue to @rblcoder.