Implement kCTF strategy

This implementation is pretty scuffed, but its more exploratory than anything else.

example-app/server/utils/config.ts

@@ -3,26 +3,31 @@ import { load } from 'js-toml';
 import z from 'zod';
 import { ChallengeStrategy } from "@impost/lib";
 
-const LeadingZeroesSchema = z.object({
-    strategy: z.literal(ChallengeStrategy.LeadingZeroes),
-    leading_zeroes: z.object({
-        difficulty: z.number().int().min(1).max(64),
+// const LeadingZeroesSchema = z.object({
+//     strategy: z.literal(ChallengeStrategy.LeadingZeroes),
+//     leading_zeroes: z.object({
+//         difficulty: z.number().int().min(1).max(64),
+//     }),
+// });
+
+// const TargetNumberSchema = z.object({
+//     strategy: z.literal(ChallengeStrategy.TargetNumber),
+//     target_number: z.object({
+//         max_number: z.number().int().min(1).max(100_000),
+//     }),
+// });
+
+const kCTFSchema = z.object({
+    strategy: z.literal(ChallengeStrategy.kCTF),
+    kctf: z.object({
+        difficulty: z.number().int().min(1),
     }),
 });
 
-const TargetNumberSchema = z.object({
-    strategy: z.literal(ChallengeStrategy.TargetNumber),
-    target_number: z.object({
-        max_number: z.number().int().min(1).max(100_000),
-    }),
-});
-
-
 export type Config = z.infer<typeof Config>;
 
 export const Config = z.discriminatedUnion('strategy', [
-    LeadingZeroesSchema,
-    TargetNumberSchema,
+    kCTFSchema,
 ]);
 
 export let config: Config;