Scope-aware queries

[devnote-dev]

Currently you can include the . and # symbols in type/symbol queries when searching or getting info. However, these are not scope-aware, meaning that using a query with . will search for class methods/declarations and instance methods/declarations. For the sake of convention consistency, this should be re-evaluated to be scope-aware, so:

• docr info String.to_s should look for the class method;
• docr info String#to_s should look for the instance method;
• docr info String to_s should return the first available result

Having some form of UI to indicate similar available methods would also be useful here.