Implemented Xorg initialization code

src/xorg.zig

@@ -0,0 +1,39 @@
+const std = @import("std");
+const Renderer = @import("sideros").Renderer;
+const c = @import("sideros").c;
+
+pub fn init(allocator: std.mem.Allocator) !void {
+    const connection = c.xcb_connect(null, null);
+    defer c.xcb_disconnect(connection);
+
+    const setup = c.xcb_get_setup(connection);
+    const iter = c.xcb_setup_roots_iterator(setup);
+    const screen = iter.data;
+
+    const mask = c.XCB_CW_EVENT_MASK;
+    const value = c.XCB_EVENT_MASK_EXPOSURE;
+
+    const window = c.xcb_generate_id(connection);
+    _ = c.xcb_create_window(connection, c.XCB_COPY_FROM_PARENT, window, screen.*.root, 0, 0, 800, 600, 10, c.XCB_WINDOW_CLASS_INPUT_OUTPUT, screen.*.root_visual, mask, &value);
+
+    var hints: c.xcb_size_hints_t = undefined;
+    c.xcb_icccm_size_hints_set_min_size(&hints, 800, 600);
+    c.xcb_icccm_size_hints_set_max_size(&hints, 800, 600);
+    _ = c.xcb_icccm_set_wm_size_hints(connection, window, c.XCB_ATOM_WM_NORMAL_HINTS, &hints);
+
+    _ = c.xcb_map_window(connection, window);
+
+    _ = c.xcb_flush(connection);
+
+    var renderer = try Renderer.init(@TypeOf(connection), @TypeOf(window), allocator, connection, window);
+    defer renderer.deinit();
+
+    while (c.xcb_wait_for_event(connection)) |e| {
+        switch (e.*.response_type & ~@as(u32, 0x80)) {
+            else => {},
+        }
+
+        try renderer.render();
+        std.c.free(e);
+    }
+}