[API] Add support for DockBuilder

imgui-binding/src/main/java/imgui/internal/flag/ImGuiAxis.java

@@ -0,0 +1,10 @@
+package imgui.internal.flag;
+
+public final class ImGuiAxis {
+    private ImGuiAxis() {
+    }
+
+    public static final int None = -1;
+    public static final int X = 0;
+    public static final int Y = 1;
+}

imgui-binding/src/main/java/imgui/internal/flag/ImGuiDockNodeFlags.java

@@ -0,0 +1,50 @@
+package imgui.internal.flag;
+
+public final class ImGuiDockNodeFlags extends imgui.flag.ImGuiDockNodeFlags {
+    private ImGuiDockNodeFlags() {
+    }
+
+    /**
+     * A dockspace is a node that occupy space within an existing user window. Otherwise the node is floating and create its own window.
+     */
+    public static final int DockSpace = 1 << 10;
+    /**
+     * The central node has 2 main properties: stay visible when empty, only use "remaining" spaces from its neighbor.
+     */
+    public static final int CentralNode = 1 << 11;
+    /**
+     * Tab bar is completely unavailable. No triangle in the corner to enable it back.
+     */
+    public static final int NoTabBar = 1 << 12;
+    /**
+     * Tab bar is hidden, with a triangle in the corner to show it again (NB: actual tab-bar instance may be destroyed as this is only used for single-window tab bar)
+     */
+    public static final int HiddenTabBar = 1 << 13;
+    /**
+     * Disable window/docking menu (that one that appears instead of the collapse button)
+     */
+    public static final int NoWindowMenuButton = 1 << 14;
+    public static final int NoCloseButton = 1 << 15;
+    /**
+     * Disable any form of docking in this dockspace or individual node. (On a whole dockspace, this pretty much defeat the purpose of using a dockspace at all). Note: when turned on, existing docked nodes will be preserved.
+     */
+    public static final int NoDocking = 1 << 16;
+    /**
+     * [EXPERIMENTAL] Prevent another window/node from splitting this node.
+     */
+    public static final int NoDockingSplitMe = 1 << 17;
+    /**
+     * [EXPERIMENTAL] Prevent this node from splitting another window/node.
+     */
+    public static final int NoDockingSplitOther = 1 << 18;
+    /**
+     * [EXPERIMENTAL] Prevent another window/node to be docked over this node.
+     */
+    public static final int NoDockingOverMe = 1 << 19;
+    /**
+     * [EXPERIMENTAL] Prevent this node to be docked over another window/node.
+     */
+    public static final int NoDockingOverOther = 1 << 20;
+    public static final int NoResizeX = 1 << 21;
+    public static final int NoResizeY = 1 << 22;
+}

imgui-binding/src/main/java/imgui/internal/flag/ImGuiDockNodeState.java

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+package imgui.internal.flag;
+
+public final class ImGuiDockNodeState {
+    private ImGuiDockNodeState() {
+    }
+
+    public static final int Unknown = 0;
+    public static final int HostWindowHiddenBecauseSingleWindow = 1;
+    public static final int HostWindowHiddenBecauseWindowsAreResizing = 2;
+    public static final int HostWindowVisible = 3;
+}