Change TxCustom to TxPayment

[mattsse]

Describe the feature

we have

reth/examples/custom-node/src/primitives/tx_custom.rs

Line 26 in 7b8c0b4

pub struct TxCustom {

which is currently just a copy pasted 1559 tx type

we want to change this to TxPayment and remove fields input, accesslist

TODO

• rename type
• remove fields input and accesslist
• replace kind field with a mandatory to: Address
• update trait impls

Additional context

No response

[farazdagi]

Can I work on this?

[nadtech-hub]

I could also do it