Add new BlockchainProvider type

[mattsse]

the current BlockchainProvider type is tied to the blockchaintree implementation.

this will change with the new inmemory state:

reth/crates/storage/provider/src/providers/mod.rs

Lines 77 to 78 in 42182f5

	// TODO: replace chain_info with CanonicalInMemoryState.
	//canonical_in_memory_state: CanonicalInMemoryState,

instead of modifying the existing one, we should roll a new type that will eventually replace BlockchainProvider once we do the transition.

#9606 allows us to do this without much hassle

TODO

first:

• duplicate

  reth/crates/storage/provider/src/providers/mod.rs

  Lines 77 to 78 in 42182f5

  	// TODO: replace chain_info with CanonicalInMemoryState.
  	//canonical_in_memory_state: CanonicalInMemoryState,

  maybe we name it BlockchainProvider2 for now
• integrate InMemoryState, remove dyn tree
• update trait implementations

followup:

• update ethlauncher:

  reth/crates/ethereum/node/src/launch.rs

  Line 53 in 42182f5

  Provider = BlockchainProvider<<T as FullNodeTypes>::DB>,