Add 'zimgui/' from commit 'a053e62c779b1ba303e21330b266a1b32d26b27a'

git-subtree-dir: zimgui
git-subtree-mainline: b0d2e231b0
git-subtree-split: a053e62c77

zimgui/demo/src/main.zig

@@ -0,0 +1,30 @@
+const std = @import("std");
+
+const im = @import("zimgui");
+
+const c = @cImport({
+    @cDefine("GLFW_INCLUDE_NONE", {});
+    @cInclude("GLFW/glfw3.h");
+});
+
+pub fn main() !void {
+    im.init();
+    defer im.deinit();
+
+    _ = c.glfwInit();
+    defer c.glfwTerminate();
+
+    const w = c.glfwCreateWindow(1280, 720, "hello", null, null);
+    defer c.glfwDestroyWindow(w);
+
+    while (c.glfwWindowShouldClose(w) != c.GLFW_TRUE) {
+        c.glfwPollEvents();
+    }
+}
+
+test "simple test" {
+    var list = std.ArrayList(i32).init(std.testing.allocator);
+    defer list.deinit(); // try commenting this out and see if zig detects the memory leak!
+    try list.append(42);
+    try std.testing.expectEqual(@as(i32, 42), list.pop());
+}