Add input validation and tests for Station names

src/inputValidation/inputValidation.ts

@@ -84,6 +84,16 @@ export function validateUuid(uuid: unknown): boolean {
     return true;
 }
 
+export function validateStation(station: unknown): boolean {
+    if (typeof station !== "string") {
+        throw new ValidationError("Invalid input: The station name should be a string");
+    }
+    if (!/^[A-Za-z0-9\s&'()-]+$/.test(station)) {
+        throw new ValidationError("Invalid input: Station name should include letters, spaces, ', '/', '-', '&' only");
+    }
+    return true;
+}
+
 export function validateReasonCode(code: unknown): boolean {
     if (typeof code === "number") {
         // Ensure it's a 3-digit number (100-999)