Cssfinder

- Fix SBiPa mode when given fixed system size. System size detection is still
not working.

- Add project based execution using `cssfproject.json` file.
- Add report generation for projects with
`cssfinder project <project-path> task-report <task-name>` command.
- Add fully separable state for n quDits (`FSnQd`) mode.
- Add backend based on numpy with single (32 bit float) and double (64 bit
float) precision.
- Add CI system with tests, quality checks and automated deployments.