Returning all themes

Return a list of all themes.

GET /themes

Return a list of all themes.

200: OK Successful Operation

content:
            application/json:
              schema:
                type: array
                items:
                  $ref: "#/components/schemas/Theme"

401: Unauthorized Unauthorized

403: Forbidden Forbidden

500: Internal Server Error Internal Server Error

content:
            application/json:
              schema:
                $ref: "#/components/schemas/Error"