Add OpenGL renderer capability target

src/renderer_gl/opengl_capabilities.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include <span>
+#include <string_view>
+
+namespace pp::renderer::gl {
+
+struct OpenGlRuntime {
+    bool desktop_gl = false;
+    bool gles = false;
+    bool web = false;
+};
+
+struct OpenGlCapabilities {
+    bool framebuffer_fetch = false;
+    bool map_buffer_alignment = false;
+    bool float32_textures = false;
+    bool float32_linear = false;
+    bool float16_textures = false;
+};
+
+[[nodiscard]] OpenGlCapabilities detect_opengl_capabilities(
+    std::span<const std::string_view> extensions,
+    OpenGlRuntime runtime) noexcept;
+
+}