Query SSTable Indexes lazily in token sorted runs for LCS, TWCS or RangeAwaredCompaction

Currently SASI searches all SSTable indexes that may include the query partition key and indexed term, but this will cause large IO overhead with range index query (ie. age > 18) when sstable count is huge.

Proposed improvement: query sstable indexes in token-sorted-runs lazily. When the data in the first few token ranges is sufficient for limit, SASI can reduce the overhead of searching sstable indexes for the remaining ranges.