Browser: Add window to inspect history

Author: https://github.com/Sauler
Commit: 3454891d38
Pull-request: https://github.com/SerenityOS/serenity/pull/16414
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/MacDue
Reviewed-by: https://github.com/linusg

Userland/Applications/Browser/History.h

@@ -18,6 +18,7 @@ public:
         DeprecatedString title;
     };
     void dump() const;
+    Vector<URLTitlePair> get_all_history_entries();
 
     void push(const URL& url, DeprecatedString const& title);
     void replace_current(const URL& url, DeprecatedString const& title);