Support custom types in tables

[mattsse]

Describe the feature

currently the tables! generates a fixed enum

reth/crates/storage/db/src/tables/mod.rs

Lines 144 to 151 in d19032f

	// Tables enum.
	// NOTE: the ordering of the enum does not matter, but it is assumed that the discriminants
	// start at 0 and increment by 1 for each variant (the default behavior).
	// See for example `reth_db::implementation::mdbx::tx::Tx::db_handles`.
	/// A table in the database.
	#[derive(Clone, Copy, PartialEq, Eq, Hash)]
	pub enum Tables {

this must be changed so that custom types for tables can be configured so that

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

Line 1260 in d19032f

|| Ok(self.tx.get::<tables::Headers>(num)?),

works with arbitrary types.

this likely means that the entire enum approach no longer works in its current form.
the way tables interact with the db env itself is like:

reth/crates/storage/db/src/implementation/mdbx/mod.rs

Lines 441 to 445 in d19032f

	/// Creates all the defined tables, if necessary.
	pub fn create_tables(&self) -> Result<(), DatabaseError> {
	let tx = self.inner.begin_rw_txn().map_err(|e| DatabaseError::InitTx(e.into()))?;
	for table in Tables::ALL {

there has been some preliminary work on custom tables, unsure how relevant this still is
#7832

looking at create_tables the trait extension in #7832 make sense

the table name is important for

Additional context

No response