add ARM2d.pyi

Signed-off-by: 李昂 <liang6516@outlook.com>

package/Arm2D/Arm2D.pyi

@@ -0,0 +1,61 @@
+# origin APIs
+class Tile:
+    def __init__(self): ...
+    def get_root(self, validRegion: Region, offset: Location) -> Tile: ...
+    def generate_child(self, reg: Region, clipRegion: int) -> Tile: ...
+    def width_compare(self, reference: Region) -> int: ...
+    def height_compare(self, reference: Region) -> int: ...
+    def shape_compare(self, reference: Region) -> int: ...
+    def region_diff(self, tile: Tile) -> Region: ...
+
+
+def is_point_inside_region(region: Region, location: Location) -> int: ...
+def get_absolute_location(tile: Tile) -> Location: ...
+def is_root_tile(tile: Tile) -> int: ...
+
+
+class Region:
+    def __init__(self): ...
+    def intersect(self, in2: Region) -> Region: ...
+
+
+class Location:
+    def __init__(self): ...
+
+# high level APIs
+
+class BackGround:
+    def __init__(self): ...
+    def setColor(self, color: str): ...
+    def getColor(self) -> str: ...
+    def update(self): ...
+
+
+class ElementList:
+    def update(self): ...
+
+
+class Element:
+    def __init__(self): ...
+    def move(self, x: int, y: int): ...
+    def right(self, x: int): ...
+    def lift(self, x: int): ...
+    def up(self, y: int): ...
+    def down(self, y: int): ...
+    def update(self): ...
+    def setAlpha(self, alpha: int): ...
+
+
+class Box(Element):
+    # override
+    def update(self): ...
+    def __init__(self): ...
+    def setColor(self, color: str): ...
+    def setSize(self, x: int, y: int): ...
+
+
+class Window:
+    background = BackGround()
+    elems = ElementList()
+    def __init__(self): ...
+    def update(self): ...