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

mxpic_release/mxpic/foundries/Silterra.pyi

@@ -0,0 +1,11 @@
+from .Foundry import Foundry as Foundry
+
+class EOM1_2ML_CU(Foundry):
+    STD_SMWG_WIDTH: float
+    SLAB_GROWTH: int
+    W_METAL_MIN: int
+    SPACING_HEATER_MIN: int
+    SPACING_METAL_MIN: int
+    W_HEATER_MIN: int
+    lib_path: str
+    def __init__(self, layermap=...) -> None: ...