standarised ContractBuildInformation and added it to all contracts

[jstuczyn]

Description

Similarly to cw2, we're now saving ContractBuildInformation under a constant storage key, i.e. b"contract_build_info" that standarises the retrieval by nym-api.

Also each of our contracts now saves and updates that information upon init and migration.

Checklist:

• added a changelog entry to CHANGELOG.md

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2 Ignored Deployments

Name	Status	Preview	Comments	Updated (UTC)
nym-explorer	⬜️ Ignored (Inspect)	Visit Preview		Jun 11, 2024 11:23am
nym-next-explorer	⬜️ Ignored (Inspect)	Visit Preview		Jun 11, 2024 11:23am

[tommyv1987]

Testing Completion Date: [12/06/2024]

Testing Steps Performed:

1. Use the latest release/chomp contracts and deploy these to QA
2. Use the nym-api to query for the results of these new contracts

curl -X 'GET' \
  'https://qa-nym-api.qa.nymte.ch/api/v1/network/nym-contracts-detailed' \
  -H 'accept: application/json'

Which returns a detailed view of the contracts and which branch they were built from, alongside rust versions and so forth.

Validation:

• ✅ Test Passed
• [ 🔴 ] Issues Found

Notes (if any):
N/A

Attachments (if applicable):
N/A