feat(builder): allow for multiple private keys

[dancoombs]

Closes #724

Proposed Changes

• Add builder.private_keys CLI flag. Deprecate builder.private_key, combine if both used.
• Consume multiple private keys when creating bundle builders

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 38 lines in your changes missing coverage. Please review.

Project coverage is 54.40%. Comparing base (883c454) to head (3f44e98).

Additional details and impacted files

[](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | [Files](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | Coverage Δ | | |---|---|---| | [crates/builder/src/task.rs](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725?src=pr&el=tree&filepath=crates%2Fbuilder%2Fsrc%2Ftask.rs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform#diff-Y3JhdGVzL2J1aWxkZXIvc3JjL3Rhc2sucnM=) | `0.00% <0.00%> (ø)` | | | [bin/rundler/src/cli/builder.rs](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725?src=pr&el=tree&filepath=bin%2Frundler%2Fsrc%2Fcli%2Fbuilder.rs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform#diff-YmluL3J1bmRsZXIvc3JjL2NsaS9idWlsZGVyLnJz) | `0.00% <0.00%> (ø)` | | | [Flag](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | Coverage Δ | | |---|---|---| | [unit-tests](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `54.40% <0.00%> (-0.06%)` | :arrow_down: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform#carryforward-flags-in-the-pull-request-comment) to find out more. | [Components](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=components&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | Coverage Δ | | |---|---|---| | [rundler binary](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `0.00% <0.00%> (ø)` | | | [builder](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `45.42% <0.00%> (-0.14%)` | :arrow_down: | | [dev](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `0.00% <ø> (ø)` | | | [pool](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `65.07% <ø> (ø)` | | | [provider](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `16.10% <ø> (ø)` | | | [rpc](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `25.66% <ø> (ø)` | | | [sim](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `77.86% <ø> (ø)` | | | [tasks](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `∅ <ø> (∅)` | | | [types](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `65.45% <ø> (ø)` | | | [utils](https://app.codecov.io/gh/alchemyplatform/rundler/pull/725/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=alchemyplatform) | `18.28% <ø> (ø)` | |