feat(api): make ImVec2/ImVec4 math operations immutable (#317)

resolves #302 

Updated math operations (`plus`, `minus`, `times`, `div`) for `ImVec2` and `ImVec4` to return new instances instead of modifying the existing ones, ensuring immutability.

imgui-binding/src/generated/java/imgui/ImVec2.java

@@ -31,9 +31,7 @@ public final class ImVec2 implements Cloneable {
     }
 
     public ImVec2 plus(final float x, final float y) {
-        this.x += x;
-        this.y += y;
-        return this;
+        return new ImVec2(this.x + x, this.y + y);
     }
 
     public ImVec2 plus(final ImVec2 value) {
@@ -41,9 +39,7 @@ public final class ImVec2 implements Cloneable {
     }
 
     public ImVec2 minus(final float x, final float y) {
-        this.x -= x;
-        this.y -= y;
-        return this;
+        return new ImVec2(this.x - x, this.y -y);
     }
 
     public ImVec2 minus(final ImVec2 value) {
@@ -51,15 +47,21 @@ public final class ImVec2 implements Cloneable {
     }
 
     public ImVec2 times(final float x, final float y) {
-        this.x *= x;
-        this.y *= y;
-        return this;
+        return new ImVec2(this.x * x, this.y * y);
     }
 
     public ImVec2 times(final ImVec2 value) {
         return times(value.x, value.y);
     }
 
+    public ImVec2 div(final float x, final float y) {
+        return new ImVec2(this.x / x, this.y / y);
+    }
+
+    public ImVec2 div(final ImVec2 value) {
+        return div(value.x, value.y);
+    }
+
     @Override
     public String toString() {
         return "ImVec2{"

imgui-binding/src/generated/java/imgui/ImVec4.java

@@ -35,11 +35,7 @@ public final class ImVec4 implements Cloneable {
     }
 
     public ImVec4 plus(final float x, final float y, final float z, final float w) {
-        this.x += x;
-        this.y += y;
-        this.z += z;
-        this.w += w;
-        return this;
+        return new ImVec4(this.x + x, this.y + y, this.z + z, this.w + w);
     }
 
     public ImVec4 plus(final ImVec4 value) {
@@ -47,11 +43,7 @@ public final class ImVec4 implements Cloneable {
     }
 
     public ImVec4 minus(final float x, final float y, final float z, final float w) {
-        this.x -= x;
-        this.y -= y;
-        this.z -= z;
-        this.w -= w;
-        return this;
+        return new ImVec4(this.x - x, this.y - y, this.z - z, this.w - w);
     }
 
     public ImVec4 minus(final ImVec4 value) {
@@ -59,17 +51,21 @@ public final class ImVec4 implements Cloneable {
     }
 
     public ImVec4 times(final float x, final float y, final float z, final float w) {
-        this.x *= x;
-        this.y *= y;
-        this.z *= z;
-        this.w *= w;
-        return this;
+        return new ImVec4(this.x * x, this.y * y, this.z * z, this.w * w);
     }
 
     public ImVec4 times(final ImVec4 value) {
         return times(value.x, value.y, value.z, value.w);
     }
 
+    public ImVec4 div(final float x, final float y, final float z, final float w) {
+        return new ImVec4(this.x / x, this.y / y, this.z / z, this.w / w);
+    }
+
+    public ImVec4 div(final ImVec4 value) {
+        return div(value.x, value.y, value.z, value.w);
+    }
+
     @Override
     public String toString() {
         return "ImVec4{"