* Adds initial benchmarks of basic tracing operations.
* Expands basic operations benchmarks also adds latests results.
* Adds benchmarks for basic data and span operations
* Updates code formatting based on style guidelines.
* Updates javadoc to conform to style guidelines.
* Adds benchmarks for simple operations.
* Moves some benchmarks from SpanOperations to BasicOperations; Reformats files according to style guide.
* Removes OperationsBenchmark because all benchmarks have been moved to BasicOperationsBenchmark.
* Migrates network events to message events and reformats code to match guidelines.
* Adds benchmarks for creating Links and Message Events.
* Updates javadoc to conform to style guide.