Support RPC v2/v3 cloud activation and deactivation

[Rashika-Rajaraman]

PR Checklist

• Unit Tests have been added for new changes
• API tests have been updated if applicable
• All commented code has been removed
• If you've added a dependency, you've ensured license is compatible with Apache 2.0 and clearly outlined the added dependency.

What are you changing?

The following changes are made in this PR:

• Support cloud activation and deactivation for RPC v2/v3
• Generate activation and deactivation command candidates for all supported versions and TLS modes.
• Generate v2-style (-json, -tls-tunnel) and v3-style (--json, --tls-tunnel) flags.
• For AMT ≤18, Support both TLS-tunnel and no-tunnel activation/deactivation paths.
• For AMT >18, Support for TLS-tunnel variant only.
• Added optional RPC_BINARY environment variable for local test execution.
• Detect RPC version via RPC_VERSION environment variable.
• Improved amtinfo parsing when RPC emits log records before the AMT JSON payload.

Anything the reviewer should know when reviewing this PR?

If the there are associated PRs in other repositories, please link them here (i.e. device-management-toolkit/repo#365 )