Implement YacqEvaluatingCombinator

Implement YacqEvaluatingCombinator, which provides Evaluate-based expression
parser combinators.
Modify the implementation of term rules in the pattern grammar to match values
with new Evaluate-based combinators.
Fix associations of Evaluate-based combinator rules

Unite rules about Evaluate-based combinator rules to fix operator associations.
Implement range quantifier in the patten grammar

Implement range quantifier as an unary operator in the pattern grammar.
Implement 'as' operator rule in the patten grammar

Implement a new 'as' operator in the pattern grammar to capture patterns.