ui: clicking snippet title to show full scope

This change lets the user click the snippet title in the CodeView to insert the full scope. The existing snippets are
merged with the new lines accordingly.

src/app/qt/element/QtCodeFileList.h

@@ -29,8 +29,10 @@ public:
 	void addCodeSnippet(
 		uint startLineNumber,
 		const std::string& title,
+		Id titleId,
 		const std::string& code,
-		std::shared_ptr<TokenLocationFile> locationFile
+		std::shared_ptr<TokenLocationFile> locationFile,
+		bool insert = false
 	);
 
 	void clearCodeSnippets();