[EPIC] The Router - improvements

[saledjenic]

• Simplifying the Router implementation that it can be checked easer #14751
• Rename the Bridge interface to PathProcessor  #14637
• [EPIC] Check the router #14638
• Extend Bridge Tx detection support #10791
• Extend Path type with dependsOn field, so that the sending logic will know whether to wait for the result of dependent tx before placing this transaction #14640
• Adapt the desktop app to the new Router changes
• Estimated fee should be recalculated with every newly created block #14571
• Router - add candidates by taking the max amount on this chain as possible path #15395
• Router - build the error reporting mechanism  #15396
• Router - improvement - check for balance as early as possible #15397