command:
    ignite scaffold module subscription

GetPlan() - drop block arg, because we always use current block.
PutPlan() - do not return the Plan, because we drop it anway.

Porperly initialize the module in app.go, and add deps account,bank.

ignite scaffold type subscription \
    creator:string \
    consumer:string \
    block:uint \
    plan_index:string \
    plan_block:uint \
    is_yearly:bool \
    expiry_time:uint \
    usedCU:uint \
    remainingCU:uint \
    --no-message \
    --module subscription

ignite scaffold message subscribe \
    consumer:string
    index:string
    is_yearly:bool
    --module subscription
    --desc "Subscribe to a service plan"

To add a subscription:
  lavad tx subscription subscribe [CONSUMER] [PLAN] [IS_YEARLY] [flags]

Where:
  CONSUMER:  address of the consumer that will use this subscription
  PLAN:      unique index of the plan to subscribe to
  IS_YEARLY: whether the subscription is for a year (for discounted rate)

ignite scaffold query CurrentSubscription \
    consumer:string \
    --module subscription \
    --desc "Query current subscription to a service plan" \
    --response sub:Subscription

…ption

CNS-169 implement module subscription

…subscription

CNS-175 implement query current subscription