Add getBackendFlags and change node-ditor repository to my fork.

Author: OndraVoves

README.md

@@ -209,7 +209,7 @@ Zig wraper for [ImGuizmo](https://github.com/CedricGuillemet/ImGuizmo).
 
 ### Node editor API
 
-Zig wraper for [ImGuiNodeEditor](https://github.com/thedmd/imgui-node-editor).
+Zig wraper for [ImGuiNodeEditor](https://github.com/cyberegoorg/imgui-node-editor).
 
 ```zig
 var node_editor = zgui.node_editor.EditorContext.create(.{ .enable_smooth_zoom = true }),

src/gui.zig

@@ -370,6 +370,10 @@ pub const io = struct {
     pub const setConfigFlags = zguiIoSetConfigFlags;
     extern fn zguiIoSetConfigFlags(flags: ConfigFlags) void;
 
+    /// `pub fn getBackendFlags() BackendFlags`
+    pub const getBackendFlags = zguiIoGetBackendFlags;
+    extern fn zguiIoGetBackendFlags() BackendFlags;
+
     /// `pub fn setBackendFlags(flags: BackendFlags) void`
     pub const setBackendFlags = zguiIoSetBackendFlags;
     extern fn zguiIoSetBackendFlags(flags: BackendFlags) void;

src/zgui.cpp

@@ -1611,6 +1611,11 @@ extern "C"
         ImGui::GetIO().BackendFlags = flags;
     }
 
+    ZGUI_API ImGuiBackendFlags zguiIoGetBackendFlags()
+    {
+        return ImGui::GetIO().BackendFlags;
+    }
+
     ZGUI_API void zguiIoSetDisplaySize(float width, float height)
     {
         ImGui::GetIO().DisplaySize = {width, height};