Write a SpacetimeDB backend module in TypeScript that tests all elementary/primitive column types.

TABLE
- primitive
  - Fields:
    - id: number (i32, primary key)
    - count: number (i32)
    - total: bigint (i64)
    - price: number (f32)
    - ratio: number (f64)
    - active: boolean
    - name: string

REDUCERS
- seed: insert one row with all field types:
  - (id=1, count=2, total=3000000000, price=1.5, ratio=2.25, active=true, name="Alice")
