feat(bin): delete snapshot jars in db clear

[shekhirin]

This PR makes reth db clear delete static files for the associated segments:

reth/bin/reth/src/commands/db/clear.rs

Lines 26 to 39 in d056c9f

	Subcommands::Snapshot { segment } => {
	let snapshot_provider = provider_factory
	.snapshot_provider()
	.expect("snapshot provider initialized via provider factory");
	let snapshots = iter_snapshots(snapshot_provider.directory())?;
	if let Some(segment_snapshots) = snapshots.get(&segment) {
	for (block_range, _) in segment_snapshots {
	snapshot_provider
	.delete_jar(segment, find_fixed_range(*block_range.start()))?;
	}
	}
	}
	}

We now have two subcommands for reth db clear:

• reth db clear mdbx <TABLE>
• reth db clear snapshot <SEGMENT>.

[mattsse]

lgtm

[onbjerg]

lgtm