Fix problems with Tinybird deployment

[FGonzalezLopez]

The objective of these changes is to enable running these commands without errors:

• tb branch use main
• tb branch rm tb_deploy_tinybird_add_column_test
  (Clean up if needed)
• tb branch create --last-partition --wait tb_deploy_tinybird_add_column_test
• tb branch use tb_deploy_tinybird_add_column_test
• tb deploy

This also introduces a tentative "version log" to keep track of the latest deployed version in Tinybird.

I have included the first draft of a "version upgrade script", but I think I have gone overboard with stuff we don't really need, and I am going to cut back its complexity and the amount of stuff that it does. The script has been cut back to a really simple set of commands that perform the necessary data operations.

You can test the version upgrade script with the data migration (after deploying):
First initialize the version_log datasource

• tb datasource truncate version_log --yes
• echo "{\"version\":\"0.0.0\",\"step_id\":-1,\"message\":\"Current version statement\"}" > /tmp/msg.ndjson
• tb datasource append version_log /tmp/msg.ndjson
  Then run the script:
• sh scripts/version_upgrade.sh