More dex entries, Meltan/Melmetal base stats and dex

This finishes the regional form dex entries and adds Meltan and Melmetal to the framework since they aren't in yet.

The following needs to be done:
- Name entry
- Dex placement
- Cries
- Palettes
- Sprites adjusted for KEP itself (greyscale, 56x56, whitening)
- Sizes
- probably a bit more

data/pokemon/base_stats/melmetal.asm

@@ -0,0 +1,24 @@
+	db DEX_MELMETAL ; pokedex id
+
+	db  135,  143,  143,  34, 65
+	;   hp  atk  def  spd  spc
+
+	db STEEL, STEEL ; type
+	db 75 ; catch rate
+	db 213 ; base exp
+
+	INCBIN "gfx/pokemon/front/melmetal.pic", 0, 1 ; sprite dimensions
+	dw MelmetalPicFront, MelmetalPicBack
+
+	db THUNDERSHOCK, HARDEN, THUNDER_WAVE, TAIL_WHIP ; level 1 learnset
+	db GROWTH_SLOW ; growth rate
+
+	; tm/hm learnset
+	tmhm TOXIC, RAGE, MIMIC, DOUBLE_TEAM, BIDE, REST, SUBSTITUTE, THUNDER_WAVE, \
+		 MEGA_PUNCH, SUBMISSION, HYPER_BEAM, MEGA_KICK, BODY_SLAM, ICE_BEAM, \
+		 SOLAR_BEAM, THUNDERBOLT, THUNDER, EARTHQUAKE, FISSURE, ROCK_SLIDE, \
+		 SUBSTITUTE
+	; end
+
+	db BANK(MelmetalPicFront)
+	assert BANK(MelmetalPicFront) == BANK(MelmetalPicBack)

data/pokemon/base_stats/meltan.asm

@@ -0,0 +1,21 @@
+	db DEX_MELTAN ; pokedex id
+
+	db  46,  65,  55,  34, 35
+	;   hp  atk  def  spd  spc
+
+	db STEEL, STEEL ; type
+	db 75 ; catch rate
+	db 213 ; base exp
+
+	INCBIN "gfx/pokemon/front/meltan.pic", 0, 1 ; sprite dimensions
+	dw MeltanPicFront, MeltanPicBack
+
+	db THUNDERSHOCK, HARDEN, NO_MOVE, NO_MOVE ; level 1 learnset
+	db GROWTH_SLOW ; growth rate
+
+	; tm/hm learnset
+	tmhm TOXIC, RAGE, MIMIC, DOUBLE_TEAM, BIDE, REST, SUBSTITUTE, THUNDER_WAVE
+	; end
+
+	db BANK(MeltanPicFront)
+	assert BANK(MeltanPicFront) == BANK(MeltanPicBack)