Tag implications: sword_over_shoulder

Tag implications:

• sword over shoulder -> weapon over shoulder
• sword over shoulder -> sword

Reason:

"sword over shoulder" is simply "weapon over shoulder" + "sword"

I'm not even sure we should have this underused combo tag, but if we have it, the implications are self-explanatory.

P.S.:

• (weapon over shoulder already implies weapon and over shoulder)
• (sword already implies weapon)

Done