ReBAC

[uatuko]

ReBAC implementation based on https://github.com/uatuko/sentium/discussions/72.

• [x] https://github.com/uatuko/sentium/pull/75
• [x] https://github.com/uatuko/sentium/pull/77
• [x] https://github.com/uatuko/sentium/pull/82
• [x] https://github.com/uatuko/sentium/pull/84
• [x] https://github.com/uatuko/sentium/pull/86
• [x] https://github.com/uatuko/sentium/pull/88
• [x] https://github.com/uatuko/sentium/pull/89
• [x] https://github.com/uatuko/sentium/pull/90
• [x] https://github.com/uatuko/sentium/pull/91
• [x] https://github.com/uatuko/sentium/pull/92
• [x] https://github.com/uatuko/sentium/pull/98
• [x] https://github.com/uatuko/sentium/pull/99
• [x] https://github.com/uatuko/sentium/pull/100
• [x] https://github.com/uatuko/sentium/pull/101