Consumer configuration can accept a mem storage flag

[scottf]

Overview

From the schema:

"mem_storage": {
  "description": "Force the consumer state to be kept in memory rather than inherit the setting from the stream",
  "type": "boolean",
  "default": false
}

Clients and Tools

• [x] Schemas @ripienaar
• [x] CLI @ripienaar
• [x] Terraform @ripienaar
• [x] Github Actions @ripienaar
• [x] Go @wallyqs, @piotrpio
• [x] Java @scottf
• [x] JavaScript @aricart
• [x] .Net @scottf
• [x] C @kozlovic
• [x] Python @wallyqs
• [x] Ruby @wallyqs
• [x] Rust @Jarema

Other Tasks

• [x] docs.nats.io updated @jnmoyne
• [x] Update client features spreadsheet

Client authors please update with your progress. If you open issues in your own repositories as a result of this request, please link them to this one by pasting the issue URL in a comment or main issue description.

[marthaCP]

All actions completed and added to parity sheet on 10/27/22