feat(groth16): Groth16 batch verification

[thomaslavaur]

1. What does this PR implement?

Implement the Groth16 batch verification for v1.1

2. Does the code have enough context to be clearly understood?

Yes

3. Who are the specification authors and who is accountable for this PR?

@thomaslavaur

4. Is the specification accurate and complete?

Yes

5. Does the implementation introduce changes in the specification?

No

Checklist

Warning

Do not merge the PR if any of the following is missing:

• 1. The PR title follows the Conventional Commits specification.
• 2. Description added.
• 3. Context and links to Specification document(s) added.
• 4. Main contact(s) (developers and specification authors) added
• 5. Implementation and Specification are 100% in sync including changes. This is critical.
• 6. Link PR to a specific milestone.