paych: Print available amounts in paych status

paychmgr/manager.go

@@ -142,6 +142,8 @@ func (pm *Manager) AvailableFundsByFromTo(ctx context.Context, from address.Addr
 			To:                  to,
 			ConfirmedAmt:        types.NewInt(0),
 			PendingAmt:          types.NewInt(0),
+			AvailableAmt:        types.NewInt(0),
+			PendingAvailableAmt: types.NewInt(0),
 			PendingWaitSentinel: nil,
 			QueuedAmt:           types.NewInt(0),
 			VoucherReedeemedAmt: types.NewInt(0),

paychmgr/simple.go

@@ -340,6 +340,8 @@ func (ca *channelAccessor) currentAvailableFunds(ctx context.Context, channelID
 		To:                  channelInfo.to(),
 		ConfirmedAmt:        channelInfo.Amount,
 		PendingAmt:          channelInfo.PendingAmount,
+		AvailableAmt:        channelInfo.AvailableAmount,
+		PendingAvailableAmt: channelInfo.PendingAvailableAmount,
 		PendingWaitSentinel: waitSentinel,
 		QueuedAmt:           queuedAmt,
 		VoucherReedeemedAmt: totalRedeemed,