Refactor the Pattern framework to allow for combined match/rewrite patterns....

Refactor the Pattern framework to allow for combined match/rewrite patterns. This is done by adding a new 'matchAndRewrite' function to RewritePattern that performs the match and rewrite in one step. The default behavior simply calls into the existing 'match' and 'rewrite' functions. The 'PatternMatcher' class has now been specialized for RewritePatterns and has been rewritten to make use of the new matchAndRewrite functionality.

This combined match/rewrite functionality allows simplifying the majority of existing RewritePatterns, as they do not benefit from separate match and rewrite functions.

Some of the existing canonicalization patterns in StandardOps have been modified to take advantage of this functionality.

PiperOrigin-RevId: 240187856