Rename `ConsoleExporter` to `ConsoleLogExporter`?

[codeboten]

As suggested by @lonewolf3739, we should rename the ConsoleExporter to ConsoleLogExporter to follow the pattern established by the ConsoleSpanExporter.

Not in this PR; Should we rename this to ConsoleLogExporter?

Originally posted by @lonewolf3739 in #2253 (comment)

[lzchen]

+1 for this, especially since we have ConsoleSpanExporter.