Feature: Tags

[quentingrchr]

Feature issue: Fix #84
Feature branch: feat/tags
Feature PR: #108

Tasks:

• Update the Prisma schema (add Tags M2M relations with DigestBlock and Links) Feat(tags): Update the Prisma schema and digest block edition #105
• Add UI in Digest Block edition and UI in Public digest page (and save/update tags logic) Feat(tags): Update the Prisma schema and digest block edition #105
• Add /tags/[slug] page. And "most popular tags" block Feat(tags): Add tag page #106
• Add AI functionality to set tags on link save. Feat(tags): [AI] Add tag on bookmark save #107