Write a SpacetimeDB backend module in TypeScript that defines one table and two reducers: one that inserts a row and one that deletes a row.

TABLE
- user
  - Fields:
    - id: number (u64, primary key, autoInc)
    - name: string
    - age: number (i32)
    - active: boolean

REDUCERS
- insertUser: given name:string, age:number, active:boolean, insert a new row (id is auto-assigned)
- deleteUser: given id:number, delete the row with matching id
