Add a Semi-Auto firing mode to the Erma MP-36

[WarFrog_935-psn]

The weapon is missing its Semi-Auto mode

Correct the position of the charging handles on the following guns

How the MP-40 is now [IMG_20230216_001052] How MP-40 is supposed to be [IMG_20230215_235712] the same goes for the Erma EMP-36, MP-38, MP-38/40, MP-41 and MP-40/II How the M1921 patern Thompsons are now [IMG_20230216_181833] How the M1921 style Thompsons are supposed to be [IMG_20230216_183249] How the Type 100s are now [IMG_20230216_185757] How the Type 100s are supposed to be [IMG_20230216_185728] How the PPD-34/38 is now [IMG_20230216_190619] How the PPD-34/38 is suppose…