Add Markdown source highlighting (#173)

src/lib/api.ts

@@ -265,6 +265,7 @@ export async function setGeneralSettings(
   showLineNumbers: boolean,
   showLinkArrows: boolean,
   defaultViewMode: boolean,
+  newNotesInSourceMode: boolean,
   showTrayIcon: boolean,
   closeToTray: boolean,
   enableWikiLinks: boolean,
@@ -291,6 +292,7 @@ export async function setGeneralSettings(
     showLineNumbers,
     showLinkArrows,
     defaultViewMode,
+    newNotesInSourceMode,
     showTrayIcon,
     closeToTray,
     enableWikiLinks,