Issue #106: Add data return as csv in several routes

package.json

specs/blendb-api-v1.raml

src/api/controllers/data.spec.ts

src/api/controllers/data.ts

src/api/controllers/engine.spec.ts

src/api/controllers/engine.ts

src/api/middlewares/csv.ts

src/api/types.ts

src/main.ts

src/util/scenarioHandler.ts

test/files/data.csv

test/files/data.ssv

test/files/data.tsv

test/files/metrics.csv

test/scenario.ts

yarn.lock