Add SqlServerCollector for metrics

[bpkroth]

Wishlist item for now.
See Also:

• https://github.com/cmu-db/benchbase/blob/bbe8c1db84ec81c6cdec6fbeca27b24b1b4e6612/src/main/java/com/oltpbenchmark/api/collectors/MySQLCollector.java
• https://github.com/cmu-db/benchbase/blob/36f345e18effaf1fa1c947ba78ef82b6281b5c58/src/main/java/com/oltpbenchmark/api/collectors/DBParameterCollectorGen.java

[bpkroth]

See Also: #300