replace non-specific dependencies

[zeroXbrock]

Is your feature request related to a problem? Please describe.

We import the entire alloy & reth(-optimism-node) crates but we really only need a few things, accessible via sub-crates (e.g. alloy-transport-http). We could shave down build times by replacing these crates with sub-crates where possible. I'm not sure how much we can do with reth deps (hopefully we can, we only use its types), but I know alloy deps could be shaved down.

Describe the solution you'd like

• figure out which crates can be replaced with more-specific sub-crates (check the root Cargo.toml)
• replace them
• focus on reth and alloy but if you find any others, feel free to add them

[NehharShah]

@zeroXbrock can I work on this issue?

[zeroXbrock]

all yours @NehharShah, thank you!