Tdl 26656 transform state

[leslievandemark]

Description of change

Tap-github supports multiple repositories. The previous bookmark format for tap was:
{bookmarks {repository {stream_name ...}}}
In order to support stream level resets, we need to switch the bookmark format to:
{bookmarks {stream_name {repository ...}}}

This pr update the translate_state function to convert old bookmarks into the new state. New connections will have the new format automatically.

Manual QA steps

• Created a connection on master with the old bookmark format. Switched to this branch, ran another sync and checked that the format changed. Then, I deselected all the repos in use and added a new repo to make sure state is not dropped.

Risks

• in 2018 multiple repo support was added here, and bookmarks were converted from {bookmarks {stream_name {bookmark_values...}}} to {bookmarks {repository {stream_name ...}}}. There are 13 connection that still have the old old bookmark format, but they are all either on non-active accounts or paused an require a major version bump. In this update the old old bookmark format is not accommodated, it should be impossible for a connection with that format to run this code, but if I missed something and it happens the tap would error.
• I fixed the 'events' data generation in the pagination tap-tester test. It will now create and close an issue on each run in singer-io/test-repo. This could create a lot of closed issues over time.

Rollback steps

• investigate the issue, a new pr will likely need to be created to handle different state formats

AI generated code

https://internal.qlik.dev/general/ways-of-working/code-reviews/#guidelines-for-ai-generated-code

• this PR has been written with the help of GitHub Copilot or another generative AI tool