Use constants for Oam .shape and .size fields

Also some general formatting fixes for constants.

src/trainer_see.c

@@ -100,10 +100,10 @@ static const struct OamData sOamData_Icons =
     .objMode = 0,
     .mosaic = 0,
     .bpp = 0,
-    .shape = 0,
+    .shape = SPRITE_SHAPE(16x16),
     .x = 0,
     .matrixNum = 0,
-    .size = 1,
+    .size = SPRITE_SIZE(16x16),
     .tileNum = 0,
     .priority = 1,
     .paletteNum = 0,
@@ -112,13 +112,22 @@ static const struct OamData sOamData_Icons =
 
 static const struct SpriteFrameImage sSpriteImageTable_ExclamationQuestionMark[] =
 {
-    {sEmotion_ExclamationMarkGfx, 0x80},
-    {sEmotion_QuestionMarkGfx, 0x80}
+    {
+        .data = sEmotion_ExclamationMarkGfx,
+        .size = 0x80
+    },
+    {
+        .data = sEmotion_QuestionMarkGfx,
+        .size = 0x80
+    }
 };
 
 static const struct SpriteFrameImage sSpriteImageTable_HeartIcon[] =
 {
-    {sEmotion_HeartGfx, 0x80}
+    {
+        .data = sEmotion_HeartGfx,
+        .size = 0x80
+    }
 };
 
 static const union AnimCmd sSpriteAnim_Icons1[] =