sqlmesh: implement all existing metrics

[ccerv1]

Code metrics:

• [ ] repository_count,
• [ ] first_commit_date,
• [ ] last_commit_date,
• [x] star_count,
• [x] fork_count,
• [x] contributor_count,
• [x] contributor_count_6_months,
• [ ] new_contributor_count_6_months,
• [x] fulltime_developer_average_6_months,
• [x] active_developer_count_6_months,
• [x] commit_count_6_months,
• [x] opened_pull_request_count_6_months,
• [x] merged_pull_request_count_6_months,
• [x] opened_issue_count_6_months,
• [x] closed_issue_count_6_months

Onchain metrics:

• [ ] days_since_first_transaction,
• [ ] active_contract_count_90_days,
• [x] transaction_count,
• [x] transaction_count_6_months,
• [x] gas_fees_sum,
• [x] gas_fees_sum_6_months,
• [x] address_count,
• [x] address_count_90_days,
• [ ] new_address_count_90_days,
• [ ] returning_address_count_90_days,
• [ ] high_activity_address_count_90_days,
• [ ] medium_activity_address_count_90_days,
• [ ] low_activity_address_count_90_days,
• [ ] multi_project_address_count_90_days

Superchain:

• [ ] power_user_addresses
• [ ] recuring_addresses
• [ ] trusted_transaction_count
• [ ] trusted_daily_active_users
• [ ] trusted_monthly_active_users
• [ ] trusted_recurring_users
• [ ] trusted_users_onboarded
• [ ] openrank_trusted_users
• [x] transactions
• [x] monthly_active_addresses
• [ ] daily_active_addresses
• [x] gas_fees

[ryscheng]

Added a README on how to get started here https://github.com/opensource-observer/oso/pull/2093

[ccerv1]

Going to do a first pass with this PR

[ccerv1]

https://github.com/opensource-observer/oso/pull/2517