feat: configurable gas price

[yehjxraymond]

Allow the user to specify gas price or have option for normal, fast or fastest when sending a transaction...

or the transaction will get stuck on a busy day like:

[Nebulis]

Should we find a way to cancel transaction first ? I guess it's ok on ropsten but on mainnet u likely dont want to send the "same" transaction twice

[yehjxraymond]

You can't really cancel a transaction i think? It's probabilistic at best by sending a replacement tx...

[Nebulis]

No idea what you can do but basically you might not think about this issue until it happens:

• you run a command
• after a min you think that you should have specified higher gas price
• too bad it's too late u already started and cant cancel ? or can u run again with higher price ?

just to say that you might not specify the gas until you have the problem. (I like the option though)

[gjj]

I think the normal, fast and fastest option seems to be a Metamask thing. Not sure if it helps but maybe this is a potential solution?

From https://ethereum.stackexchange.com/a/76285:

To "speed up a transaction" there's only one possible option: to send a new transaction with higher gas price but with the same nonce. This way if nodes see both of the transactions they will most likely pick up the one with the higher gas price and once that is mined the other transaction becomes invalid (a tx with that nonce has already been mined) and is ignored & dropped.

Thought that this article explains speeding up transactions quite well: https://blog.blocknative.com/blog/speed-up-transactions

[Nebulis]

Done in #65 , do you want to close this @yehjxraymond ?