Function TimeFactory

TimeFactory(timeMode: string): Time
Creates a Time implementation based on the specified mode.
Parameters
- timeMode: string
  Time behavior mode (REAL, CONST, or STEP)
Returns Time
Time implementation matching the mode
Example
```
// Production: uses real system time
const realTime = TimeFactory(TimeMode.REAL);

// Testing: constant time
const constTime = TimeFactory(TimeMode.CONST);

// Testing: stepped time
const stepTime = TimeFactory(TimeMode.STEP);
```
- Defined in base-sys-abstraction.ts:108