Support setting a custom gas limit and gas price

[john-light]

It can often happen, especially on less-used networks or with newer contracts, that the default gas limit presented to the wallet for signing will result in an out of gas error, or on the other end, is way too high and gives the user an artificially-inflated expectation regarding the price of their transaction (or, it causes them to think the cost exceeds their gas balance).

Additionally, there are scenarios where users want more control over gas prices, such as during high-stakes trades or mints. It would be nice to give users this advanced level of control in the gas settings section.

Mockup:

[kvhnuke]

Thank you for your feedback! However, we will not be implementing it due to EIP1559 gas fee structure which makes custom gas prices no longer needed

[john-light]

@kvhnuke

1. Not all EVM networks have implemented EIP1559. For example, Rootstock.

2. Even in EIP1559, there are two fee parameters: base fee and priority fee. The priority fee is the parameter that is typically modified by the user to express their priority preferences, and would therefore be useful for users to be able to customize in the Enkrypt wallet.