Charge order-matching fee for limit orders

[luckysori]

In #838 we mentioned an order-matching fee for the maker. PR #863 only dealt with the app side.

The example value suggested for the maker was 0.15%, half of the taker's.

For now only the maker binary should be able to create limit orders, which is why this topic is also known as the "order-matching fee for the maker".

[da-kami]

For me this means that the coordinator will have to distinguish how much to charge each party involved in the trade.
I suppose the decision can be based on the order type - if it is a limit order the fee will be different than if it is a market order.

I would avoid talking about maker and taker if it can be avoided and rather just use e.g. the order type as criteria which implies maker and taker.

[bonomat]

Yes, the maker will need a channel with the coordinator to pay this fee.

[bonomat]

depends on #926

[github-actions]

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[luckysori]

I think we still want this eventually.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 days.