chore(core): add a few missing constants

packages/trilium-core/src/services/export/markdown.ts

@@ -0,0 +1,10 @@
+// TODO: Move this to a dedicated file someday.
+export const ADMONITION_TYPE_MAPPINGS: Record<string, string> = {
+    note: "NOTE",
+    tip: "TIP",
+    important: "IMPORTANT",
+    caution: "CAUTION",
+    warning: "WARNING"
+};
+
+export const DEFAULT_ADMONITION_TYPE = ADMONITION_TYPE_MAPPINGS.note;