fix(guide) add stubs, update spellings and prepare for move (#36531)

* fix(guide) add stubs and correct file path misspellings and pr… (#36528)

* fix: corrected file path to match curriculum

* fix: renamed to newer challenge name

* fix: added solutions to articles from challenge files

* fix: added missing .english to file name

* fix: added missing title to guide article

* fix: correct solution for guide article

* fix: replaced stub with hint

* fix: added space in Hint headers

* fix: added solution to guide article

* fix: added solution to guide article

* test: replaced stub with hint and solution

* fix: add Problem number: to title

* fix: changed generatorexponential to correct name

* fix: renamed knight's tour to knights-tour

* fix: updated guide article

guide/english/certifications/coding-interview-prep/rosetta-code/cusip/index.md

@@ -0,0 +1,40 @@
+---
+title: CUSIP
+---
+# CUSIP
+
+---
+## Solutions
+
+<details><summary>Solution 1 (Click to Show/Hide)</summary>
+
+```javascript
+function isCusip(s) {
+  if (s.length != 9) return false;
+  var sum = 0;
+  var ASCII = x => x.charCodeAt(0);
+  for (var i = 0; i < 7; i++) {
+    var c = s.charCodeAt(i);
+
+    var v;
+    if (c >= ASCII('0') && c <= ASCII('9')) {
+      v = c - 48;
+    } else if (c >= ASCII('A') && c <= ASCII('Z')) {
+      v = c - 64; // lower case letters apparently invalid
+    } else if (c == ASCII('*')) {
+      v = 36;
+    } else if (c == ASCII('@')) {
+      v = 37;
+    } else if (c == ASCII('#')) {
+      v = 38;
+    } else {
+      return false;
+    }
+    if (i % 2 == 1) v *= 2; // check if odd as using 0-based indexing
+    sum += Math.floor(v / 10) + v % 10;
+  }
+  return s.charCodeAt(8) - 48 == (10 - (sum % 10)) % 10;
+}
+```
+
+</details>