feat(jdk-codemodel): resolve method references and parameter symbols to their descriptors

[deer]

visitMemberReference now resolves method references (e.g. Foo::bar) to a ResolvedMethod trait and stamps a usage-site SourceLocation.FilePosition, matching what visitMethodInvocation already does, by sharing the resolveMethod lookup between MethodInvocationTree and MemberReferenceTree through a common resolveMethod(Element) helper.

Symbol.Parameter now carries the resolved FormalParameterDescriptor instead of a bare TypeUsage, closing usage-to-declaration navigation for parameters the same way Symbol.Field already does for fields; resolution walks the enclosing ExecutableElement (method or constructor) and matches it against the CodeModel by name, arity, and parameter types before indexing into its FormalParameterDescriptors, correctly leaving lambda parameters unresolved since they aren't part of the enclosing executable's own parameter list.

CatchClause also gets its exception parameter stamped with a declaration-site SourceLocation, mirroring the treatment EnhancedFor already gives its loop variable. parametersMatch was generalized from MethodDescriptor to CallableDescriptor so the same matching logic serves both methods and constructors.