Add A-7E Corsair II mod

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Create A-7E.lua

Co-Authored-By: Antonio <54774215+Adecarcer@users.noreply.github.com>

game/theater/start_generator.py

@@ -55,6 +55,7 @@ class GeneratorSettings:
 class ModSettings:
     a4_skyhawk: bool = False
     a6a_intruder: bool = False
+    a7e_corsair2: bool = False
     f4bc_phantom: bool = False
     f15d_baz: bool = False
     f_16_idf: bool = False