adding soition for 30-day's problems

solutions/059.md

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+### Typescript
+141. Linked List Cycle
+
+```typescript
+function hasCycle(head: ListNode | null): boolean {
+    const check = new Set();
+    while(head){
+        if(check.has(head)) return true;
+        check.add(head);
+        head=head.next
+    }
+    return false
+};```

solutions/060.md

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+### Typescript
+142. Linked List Cycle II
+
+```Typescript
+function detectCycle(head: ListNode | null): ListNode | null {
+    const check=new Set();
+    while(head){
+        if(check.has(head)) return head;
+        check.add(head);
+        head=head.next
+    }
+    return null
+};
+```