#99: Added datasets via db scripts

Information about Datasets:

These datasets are from the Food and Agriculture Organization of the UN and are primarily global in nature.

1. Emissions by sector dataset: Provides emissions for various items like energy, waste, forest, etc for each country.
2. Emissions by food dataset: Provides emissions from meat, milk, rice, cereals, and eggs for each country
3. Emissions by land dataset: Provides emissions from different lands for each country
4. Emissions by Agriculture dataset: Provides emissions for various types of agricultural processes like cultivation, fertilizers, manures for each country