Murilo Santana

Add sqlite3 support for chat memory history. ### PR Checklist - [x] Read the [Contributing documentation](https://github.com/tmc/langchaingo/blob/main/CONTRIBUTING.md). - [x] Read the [Code of conduct documentation](https://github.com/tmc/langchaingo/blob/main/CODE_OF_CONDUCT.md). - [x] Name your Pull Request...

- Add CI jobs for checking examples and middlewares - Add tests for gin middleware - Support generic fs.FS in SpecFS instead of *embed.FS type