Update DAB to major version 2, minor version 0

[Aniruddh25]

We need to update the major version of Data API builder (DAB) to 2 and the minor version to 0. This aligns DAB's versioning strategy for upcoming features and fixes.

Impact

• Consumers and integrators will need to adjust for the new major release.
• Documentation and internal references will need updating.

Requested Actions

• Increase DAB's major version to 2 and minor version to 0.
• Review and update version references throughout documentation and codebase.
• Ensure version bump complies with release checklist.

Additional context

This change is for strategic alignment with new features and breaking changes expected in future releases.