Remove OpenGL Registry submodule, use zig package manager

Author: edqx

.gitmodules

@@ -22,13 +22,6 @@ executable.root_module.addImport("opengl", opengl);
 ```
 
 ## Usage: Standalone
-### Cloning
-Ensure to also clone the [OpenGL-Registry](https://github.com/KhronosGroup/OpenGL-Registry/) submodule when cloning this
-repository. Use:
-```sh
-git clone https://github.com/MidlightStudio/zig-opengl-bindings.git --recurse-submodules
-```
-
 ### Building
 Building the standalone binary is as simple as:
 ```sh

OpenGL-Registry

@@ -5,6 +5,7 @@ pub fn build(b: *std.Build) void {
     const optimize = b.standardOptimizeOption(.{});
 
     const dishwasher = b.dependency("dishwasher", .{});
+    const openglRegistry = b.dependency("OpenGL-Registry", .{});
 
     const exe = b.addExecutable(.{
         .name = "zig-opengl-bindings",
@@ -13,7 +14,7 @@ pub fn build(b: *std.Build) void {
         .optimize = optimize,
     });
 
-    exe.root_module.addImport("gl.xml", b.addModule("gl-xml", .{ .root_source_file = b.path("OpenGL-Registry/xml/gl.xml") }));
+    exe.root_module.addImport("gl.xml", b.addModule("gl-xml", .{ .root_source_file = openglRegistry.path("xml/gl.xml") }));
     exe.root_module.addImport("dishwasher", dishwasher.module("dishwasher"));
 
     b.installArtifact(exe);

README.md

@@ -6,6 +6,10 @@
             .url = "https://github.com/edqx/dishwasher/archive/refs/tags/1.0.4.zip",
             .hash = "12209f29d4963ec005990c46310ce63d883b2c02d1e79906ec60ec1b4f40466d34a0",
         },
+        .@"OpenGL-Registry" = .{
+            .url = "https://github.com/KhronosGroup/OpenGL-Registry/archive/5466009a38991f5ea5c2009105bd83f19fe49979.zip",
+            .hash = "1220c3c44306989ea798da3441387891a399f960e32eeedbd535e34f838d1cc903ca",
+        },
     },
     .paths = .{
         "build.zig",