Description

params: use rialto to test builtin network logic

Rationale

there are three builtin network, mainnet, chapel, rialto
if we only use non-builtin network to test, some bugs may can't be found,
that is the reason of releasing v1.3.6 and v1.3.7

rialto with chainid 1417 is a deprecated testnet, useless now, but we can use it to test builtin network logics.
for now, during testing, we need to

1. modify RialtoGenesisHash
2. modify hardfork times, such as shanghai and kepler
   then recompile client. It's very not convinient, this PR want to address them.

In this PR,

1. a new flag rialtohash can be used to pass real genesis hash of your local testnet
2. override.shanghai and override.kepler are used to override the hardcoded harfork times,
   following exsited override.cancun and override.verkle, they just used to test, not online

by the way, old upgrade codes for rialto network are useless, so delete them

Example

add an example CLI or API response...

Changes

Notable changes:

• add each change in a bullet point here
• ...