SwiftUI that generates a 3x3 grid of blue circles
Outer ForEach Loop: The outermost loop, ForEach(0..<3) creates three times, creating three rows of circles. Inside this loop, we have a VStack to organize these rows vertically.
Nested HStack Loop: The HStack loop, ForEach(0..<3), creates three times horizontally, creating three columns of circles in each row.
Inner ForEach Loop: The innermost loop, ForEach(0..<3), creates three blue circles horizontally within each column.
The result is a 3x3 grid of blue circles.