feat: parse boolean string to boolean for search filter + Refacto

...ories/controllers/categories-accompagnement.controller.ts

...ategories/controllers/categories-formations.controller.ts

src/categories/controllers/categories-others.controller.ts

src/categories/services/categories-accompagnement.service.ts

src/categories/services/categories-formations.service.ts

src/categories/services/categories-others.service.ts

src/structures/dto/query-structure.dto.ts

src/structures/schemas/filter.schema.ts

src/structures/structures.controller.ts

src/structures/structures.service.ts