Creates a projection observable that applies a sequence of operators
required to project requested projections into a postgres database.
Uses TypeORM entities and operators defined in 'projection-typeorm' package.
Dependencies of each projection are defined in ./prepareTypeormProjection.ts
Creates a projection observable that applies a sequence of operators required to project requested
projectionsinto a postgres database.Uses TypeORM entities and operators defined in 'projection-typeorm' package. Dependencies of each projection are defined in ./prepareTypeormProjection.ts