Rewrite diagnostics popup with new api

include/editor/editor.h

@@ -2,12 +2,12 @@
 #define EDITOR_H
 
 #include "editor/indents.h"
+#include "extentions/diagnostics.h"
 #include "extentions/hover.h"
 #include "io/knot.h"
 #include "io/sysio.h"
 #include "syntax/extras.h"
 #include "syntax/parser.h"
-#include "ui/diagnostics.h"
 #include "utils/utils.h"
 #include "windows/decl.h"
 
@@ -39,7 +39,7 @@ struct Editor : Window {
   std::shared_mutex lsp_mtx;
   std::atomic<struct LSPInstance *> lsp = nullptr;
   HoverBox *hover_popup = init_hover();
-  bool diagnostics_active = false;
+  DiagnosticBox *diagnostic_popup = init_diagnostic();
   std::atomic<int> lsp_version = 1;
   IndentationEngine indents = {};
   Parser *parser = nullptr;