feat: add block explorer

[bard]

Description

• split anvil / allo-deployer containers
• add block explorer (otterscan) on ports 13005 and 13007

Note 1: depends on gitcoinco/grants-stack-allo-contracts-v1#3
Note 2: this populate script fails here due to an error from pina, apparently fetch isn't providing all the required headers when uploading a file. Might be related to the version bump in node which comes with a different fetch client. Needs to be solved before this can be merged, hence leaving as draft.

Checklist

This PR:

• Includes only changes relevant to the original ticket. Significant refactoring needs to be separated.
• Doesn't disable eslint rules.
• Doesn't work around the type checker (including but not limited to: type casts, non-null assertions, @ts-ignore, unjustified optional values).
• Doesn't contain commented out code.
• If adding/updating a feature, it adds/updates its test script on Notion.

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[thelostone-mc]

Closing as PR. Will reopen when we reprioritise it