Add ABAP to supported code formatting languages (#11721)

* Initial plan

* Add ABAP as a supported code formatting language

Co-authored-by: tommoor <380914+tommoor@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: tommoor <380914+tommoor@users.noreply.github.com>

shared/editor/lib/code.ts

@@ -21,6 +21,11 @@ type CodeLanguage = {
  */
 export const codeLanguages: Record<string, CodeLanguage> = {
   none: { lang: "", label: "Plain text" },
+  abap: {
+    lang: "abap",
+    label: "ABAP",
+    loader: () => import("refractor/lang/abap").then((m) => m.default),
+  },
   bash: {
     lang: "bash",
     label: "Bash",