full compile system build. 2. beam_spliter, MMI and spiral classes added

mxpic_release/mxpic/components/primitives/multimode_interferometers.pyi

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+from ...structures import *
+from ...routing import Route as Route
+from ...structures import Conchoid as Conchoid
+from _typeshed import Incomplete
+from turtle import shape as shape
+
+class MMI_ML:
+    name: Incomplete
+    instantiate: bool
+    L_arm: Incomplete
+    xs: Incomplete
+    w_arm: Incomplete
+    arm_sine_width: Incomplete
+    L_mmi: Incomplete
+    w_mmi: Incomplete
+    res: Incomplete
+    N_out: Incomplete
+    N_in: Incomplete
+    Dp_out: Incomplete
+    Dp_in: Incomplete
+    mmi_sine_width: Incomplete
+    cell: Incomplete
+    L: Incomplete
+    def __init__(self, name=None, L_arm=[10], w_arm=[0.45, 1.35], xs: str = 'strip', arm_sine_width: bool = False, L_mmi=[10], w_mmi=[5, 5], mmi_sine_width: bool = False, sharp_patch: bool = True, show_pins: bool = False, res: float = 0.01, N_out: int = 3, N_in: int = 1, Dp_out: float = 1.5, Dp_in: float = 1.5) -> None: ...
+    def generate_gds(self, sharp_patch, show_pins): ...
+    def generate_test_gds(self, gc, dX_gc2gc, dY_gc2gc, R_bend: int = 10, Xout_offset: int = 50): ...
+
+class MMI_STD(MMI_ML):
+    def __init__(self, name=None, N_out: int = 3, N_in: int = 1, L_arm: int = 10, w_wg: float = 0.45, w_port: float = 1.2, xs: str = 'strip', L_mmi: int = 10, w_mmi: int = 5, sharp_patch: bool = True, show_pins: bool = False, Dp_out: float = 1.5, Dp_in: float = 1.5) -> None: ...