Label all of PARTYMENUACTION_*

It's pretty clear what it's used for.
PartyMenuActionText is used for two things:
1) Storing what kind of action we're going to do (<$10)
2) Storing the text for some kind of healing stuff I'm not entirely sure (>=$f0)

In the former case, if GetPartyMenuTilemapPointers is ran, it will be
used to pick a sequence of actions that should be done, specified in the
table, and it'll print the corresponding string using the
PartyMenuStrings table. The items in the sequence of actions that should
be done are in WritePartyMenuTilemap.

Strangely enough, one possible value is left completely unused:
PARTYMENUACTION_GIVE_MON_FEMALE. It works in the exact same way as it's
male counterpart, and as such I don't believe it was used in the
japanese version either, since it doesn't matter which gender your 'mon
is when you put 'em in the daycare.

battle/core.asm

@@ -2995,7 +2995,7 @@ SelectBattleMon: ; 3d329
 
 PickPartyMonInBattle: ; 3d33c
 .loop
-	ld a, $2 ; Which PKMN?
+	ld a, PARTYMENUACTION_SWITCH ; Which PKMN?
 	ld [PartyMenuActionText], a
 	call JumpToPartyMenuAndPrintText
 	call SelectBattleMon

constants/item_constants.asm

@@ -416,16 +416,16 @@ ITEMMENU_CLOSE              EQU 6
 
 ; PartyMenuActionText
 	const_def
-	const PARTYMENUACTION_00
+	const PARTYMENUACTION_CHOOSE_POKEMON
 	const PARTYMENUACTION_HEALING_ITEM
-	const PARTYMENUACTION_02
+	const PARTYMENUACTION_SWITCH
-	const PARTYMENUACTION_TEACH_TM
+	const PARTYMENUACTION_TEACH_TMHM
-	const PARTYMENUACTION_04
+	const PARTYMENUACTION_MOVE
 	const PARTYMENUACTION_EVO_STONE
-	const PARTYMENUACTION_06
+	const PARTYMENUACTION_GIVE_MON
-	const PARTYMENUACTION_07
+	const PARTYMENUACTION_GIVE_MON_FEMALE ; unused
-	const PARTYMENUACTION_08
+	const PARTYMENUACTION_GIVE_ITEM
-	const PARTYMENUACTION_MOBILE
+	const PARTYMENUACTION_MOBILE ; mobile
 
 const_value set $f0
 	const PARTYMENUTEXT_HEAL_PSN

engine/npctrade.asm

@@ -39,7 +39,7 @@ NPCTrade:: ; fcba8
 	jr c, .done
 
 ; Select givemon from party
-	ld b, 6
+	ld b, PARTYMENUACTION_GIVE_MON
 	callba SelectTradeOrDaycareMon
 	ld a, TRADE_CANCEL
 	jr c, .done

engine/pack.asm

@@ -603,7 +603,7 @@ GiveItem: ; 103fd
 	push af
 	res NO_TEXT_SCROLL, a
 	ld [Options], a
-	ld a, $8
+	ld a, PARTYMENUACTION_GIVE_ITEM
 	ld [PartyMenuActionText], a
 	call ClearBGPalettes
 	callba LoadPartyMenuGFX

engine/startmenu.asm

@@ -745,7 +745,7 @@ SwitchPartyMons: ; 12aec
 	callba HoldSwitchmonIcon
 	callba InitPartyMenuNoCancel
 
-	ld a, 4
+	ld a, PARTYMENUACTION_MOVE
 	ld [PartyMenuActionText], a
 	callba WritePartyMenuTilemap
 	callba PrintPartyMenuText

engine/tmhm2.asm

@@ -80,7 +80,7 @@ ChooseMonToLearnTMHM_NoRefresh: ; 2c80a
 	callba LoadPartyMenuGFX
 	callba InitPartyMenuWithCancel
 	callba InitPartyMenuGFX
-	ld a, $3 ; TeachWhichPKMNString
+	ld a, PARTYMENUACTION_TEACH_TMHM
 	ld [PartyMenuActionText], a
 .loopback
 	callba WritePartyMenuTilemap

event/daycare.asm

@@ -123,7 +123,7 @@ DayCareAskDepositPokemon: ; 16798
 	jr c, .OnlyOneMon
 	ld a, DAYCARETEXT_WHICH_ONE
 	call PrintDayCareText
-	ld b, 6
+	ld b, PARTYMENUACTION_GIVE_MON
 	callba SelectTradeOrDaycareMon
 	jr c, .Declined
 	ld a, [CurPartySpecies]

misc/mobile_12_2.asm

@@ -316,7 +316,7 @@ Function4aa25: ; 4aa25
 	call Function4aad3
 
 Function4aa34: ; 4aa34
-	ld a, $9
+	ld a, PARTYMENUACTION_MOBILE
 	ld [PartyMenuActionText], a
 	callba WritePartyMenuTilemap
 	xor a