Create database download middleware

src/libs/middlewares/downloadDatabase.js

src/libs/middlewares/query.js

src/libs/routes/city.js

src/libs/routes/class.js

src/libs/routes/classroom.js

src/libs/routes/enrollment.js

src/libs/routes/idhm.js

src/libs/routes/idhme.js

src/libs/routes/idhml.js

src/libs/routes/idhmr.js

src/libs/routes/pibpercapita.js

src/libs/routes/population.js

src/libs/routes/region.js

src/libs/routes/school.js

src/libs/routes/simulation.js

src/libs/routes/spatial.js

src/libs/routes/state.js

src/libs/routes/teacher.js

src/test/query.js