Add in spellchecker.xml support for en_AU, lt, lv, nl, ro, sl, sr, tr

Settings for missing dictionaries in menu.
Now the xml file have the same amount of 32 (+hu_zz) languages as all .dict files.

https://github.com/LineageOS/android_vendor_lineage/tree/lineage-16.0/overlay/dictionaries/packages/inputmethods/LatinIME/java/res/raw
https://github.com/LineageOS/android_packages_inputmethods_LatinIME/tree/lineage-16.0/java/res/raw

Change-Id: I9fa6245f57a0976d96e0dab37c2e25ef1180e899