Standardization attempt for submachine gun models.

BUR #58712 is pending approval.

create alias f11_submachine_gun -> f11_smg
create alias lusa_submachine_gun -> lusa_smg
create alias thompson_submachine_gun -> thompson_smg
create alias t77_submachine_gun -> t77_smg
rename type_85_submachine_gun -> type_85_smg
create alias vigneron_submachine_gun -> vigneron_smg

Potentially controversial decision.

I proposed this to reduce length and to match the rest of *_SMG ones . I am OK if you guys want the prefix alias to be reversed, it's also correct.

BUR #58714 is pending approval.

create alias m3_submachine_gun -> m3_grease_gun
category m3_grease_gun -> general

Counterpoint to forum #165677.

This might be the only exception since the M3 is famously known as the Grease Gun.