refactor(ui): réecrit certains composants de meta (#636)

packages/ui/src/components/meta-activite.tsx

packages/ui/src/components/meta-activite.vue

packages/ui/src/components/meta-demarche.tsx

packages/ui/src/components/meta-demarche.vue

packages/ui/src/components/meta-etape.tsx

packages/ui/src/components/meta-etape.vue

packages/ui/src/components/meta-titre.tsx

packages/ui/src/components/meta-titre.vue

packages/ui/src/components/metas/definition-edit.tsx

packages/ui/src/components/metas/definition-edit.vue

packages/ui/src/components/metas/meta-page-template.tsx

packages/ui/src/components/metas/meta-page-template.vue

packages/ui/src/router/index.ts

packages/ui/src/store/metas-definitions.ts