Issue #75: Add scheme from a market example

config/market_dimensions.yaml.example

config/market_enum.yaml.example

config/market_main.yaml.example

config/market_metrics.yaml.example

config/market_sources.yaml.example

config/market_views.yaml.example

test/postgres/fixtures/view10.json

test/postgres/fixtures/view11.json

test/postgres/fixtures/view12.json

test/postgres/fixtures/view13.json

test/postgres/fixtures/view14.json

test/postgres/fixtures/view15.json

test/postgres/fixtures/view16.json