Logging for equipping a weapon (Monkestation#976)

<!-- Write **BELOW** The Headers and **ABOVE** The comments else it may
not be viewable. -->
<!-- Note: PRs including balance changes authored by anyone other than
maintainers and official devs will not be considered. -->

## About The Pull Request
Logs weapon equipping
<!-- Describe The Pull Request. Please be sure every change is
documented or this can delay review or prevent the PR from being merged!
-->

## Why It's Good For The Game
admins want it
<!-- Please add a short description of why you think these changes would
benefit the game. If you can't justify it in words, it might not be
worth adding. -->

## Pre-Merge Checklist
<!-- Don't bother filling these in while creating your Pull Request,
just click the checkboxes after the Pull Request is opened and you are
redirected to the page. -->
- [ ] You tested this on a local server.
- [ ] This code did not runtime during testing.
- [ ] You documented all of your changes.
<!-- Neither the compiler nor workflow checks are perfect at detecting
runtimes and errors. It is important to test your code/feature/fix
locally. -->

Author: grungussuss

code/modules/mob/inventory.dm

@@ -176,6 +176,12 @@
 		hud_used.throw_icon?.update_icon()
 		hud_used.give_intent?.update_icon()
 	givingto = null
+	if((istype(I, /obj/item/weapon) || istype(I, /obj/item/gun) || I.force >= 15) && !forced && client)
+		// is this the right hand?
+		var/right_hand = FALSE
+		if(hand_index == LEFT_HANDS)
+			right_hand = TRUE
+		log_message("[key_name(src)] has equipped [I] in their [right_hand ? "right hand" : "left hand"], combat mode: [cmode ? "COMBAT" : "PASSIVE"].", LOG_ATTACK, color="#3333ff") // into attack logs
 	return hand_index
 
 //Puts the item into the first available left hand if possible and calls all necessary triggers/updates. returns 1 on success.