Rebar3 Kura

Create a Rebar3 plugin for Kura that automates database migration file generation based on schema changes. I need it to run as a pre-compile hook, automatically detecting new tables, added columns, dropped columns, and type changes by comparing the `kura_schema` modules against existing migrations. The tool should also provide a command to bootstrap a new Kura project, which generates a repository module and the necessary `src/migrations/` directory structure. Please ensure the documentation explains which changes, like `drop_table` or primary key changes, it explicitly skips generating.