Subnet command (#17)

* Started working on subnets

* Basic version of the subnet command

* Improved subnet command

* almost done with subnets

* improve positioning

src/core/utils.tsx

@@ -0,0 +1,12 @@
+function chunkifyString(input: string, chunkSize: number) : string[] {
+    
+    const result : string[] = [];
+    for(var i=0;i<input.length;i+=chunkSize) {
+        const size = Math.min(chunkSize, input.length-i);
+        result.push(input.substr(i, size));
+    }
+
+    return result;
+}
+
+export {chunkifyString};