These create only confusion as if they are actual different types
and it is within their usage already clear what they are about
because of the name of the variable or the function.
They are also nowhere aliased like this in any of the Portal
specification.
* Create separate portal rpc handlers for each sub-network.
* Remove random gossip from history and state networks.
* Move shared portal rpc endpoints into common handler.
* Use enum instead of network string.
* Fix eth/common & web3 related deprecation warnings for fluffy
This commit uses the new types in the new eth/common/ structure
to remove deprecation warnings.
It is however more than just a mass replace as also all places
where eth/common or eth/common/eth_types or eth/common/eth_types_rlp
got imported have been revised and adjusted to a better per submodule
based import.
There are still a bunch of toMDigest deprecation warnings but that
convertor is not needed for fluffy code anymore so in theory it
should not be used (bug?). It seems to still get imported via export
leaks ffrom imported nimbus code I think.
* Address review comments
* Remove two more unused eth/common imports
