rpk: add unsafe partition recovery

[r-vasquez]

Who is this for and what problem do they have today?

This command will allow the user to remove a set of permanently lost nodes from a cluster as cleanly as possible to allow the cluster to recover.

Relevant Core PR: #13943

Proposed Command

rpk cluster partitions unsafe-recover --from-nodes 1,2,3 [--no-confirm] [--dry][--format]

• --from-nodes is a required flag. These are the nodes the user is trying unsafely to recover partitions from.
• --no-confirm lets the user skip the plan confirmation and perform the unsafe recovery.
• --dry will only print the plan.
• --format will print the output in JSON/YAML.

The idea is to use the Admin API to perform the operation:

We can use GET /v1/debug/force_replicas_from_nodes to get the move plan and display it in our standard table format.

$ rpk cluster partitions unsafe-recover --from-nodes 1,2 

NAMESPACE  TOPIC  PARTITION  CURRENT-NODE:REPLICA  TARGET-NODE:REPLICAS  INFO
kafka      foo    231        [1:22, 2:11]          [3:1, 3:2]

And then prompt the user to confirm and apply the plan.

Additional notes

GET /v1/debug/force_replicas_from_nodes and POST /v1/debug/force_replicas_from_nodes endpoints are being added in #13943