CASSANALYTICS-102: Add TimeRangeFilter to filter out SSTables outside given time window

[sarankk]

No description provided.

[yifan-c]

I do not see the validation that check the target table is using TWCS when the time range filter is configured. Should you add the check?

[yifan-c]

One last comment

[yifan-c]

When I originally suggested, the empty filter was with range Range.openClosed(0L, 0L). The filter does not overlap with any sstables, hence it is named EMPTY. It is to replace the usage of null.
The code here creates a filter that overlaps with all SSTables. Now I realize that this is probably the behavior you want. Could you rename the filter? It is not really EMPTY, but ALL. The code can be simplified to

Suggested change

	public static final SSTableTimeRangeFilter EMPTY = new SSTableTimeRangeFilter(Range.closed(0L, 0L))
	{
	@Override
	public boolean overlaps(long startMicros, long endMicros)
	{
	return true; // accepts all SSTables
	}
	};
	public static final SSTableTimeRangeFilter ALL = new SSTableTimeRangeFilter(Range.all());