Move some methods out from SubtypeSwitcher

...oid/inputmethod/compat/InputMethodSubtypeCompatUtils.java

...c/com/android/inputmethod/keyboard/KeyboardLayoutSet.java

...android/inputmethod/keyboard/emoji/EmojiPalettesView.java

java/src/com/android/inputmethod/latin/LatinIME.java

...com/android/inputmethod/latin/RichInputMethodManager.java

...com/android/inputmethod/latin/RichInputMethodSubtype.java

java/src/com/android/inputmethod/latin/SubtypeSwitcher.java

.../src/com/android/inputmethod/latin/utils/LocaleUtils.java

...m/android/inputmethod/latin/utils/SubtypeLocaleUtils.java