Spell checking (#1137)

This adds dictionary-based spell checking to the keyboard. The keyboard looks at the word being typed and matches it against a dictionary to either complete the rest of the word or find alternative spellings.

The core of this feature is implemented in cdict, which is included as a
submodule in vendor/cidct.

Cdict is developped at https://github.com/Julow/cdict
The dictionaries are hosted at https://github.com/Julow/Unexpected-Keyboard-dictionaries/
The wordlists used to build the dictionaries are the same ones used by
HeliBoard from https://codeberg.org/Helium314/aosp-dictionaries

- Add an activity accessible from the launcher app that lists available
  dictionaries with a download button.
  The DictionaryListView view shows the list of available dictionaries and
  handles downloading and installing them.

- The Dictionaries class manages installed dictionaries. Dictionaries are
  installed as individual files into the app's private directory.

- Available dictionaries are listed in dictionaries.xml, which is generated
  when building Unexpected-Keyboard-dictionaries.
  method.xml mentions the dictionary name for each locales.

1 files changed, 7 insertions, 0 deletions

diff --git a/res/layout/dictionaries_activity.xml b/res/layout/dictionaries_activity.xml
new file mode 100644
index 0000000..96b1bcb
--- /dev/null
+++ b/res/layout/dictionaries_activity.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:fillViewport="true" android:fitsSystemWindows="true">
+  <LinearLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="vertical">
+    <TextView style="@style/paragraph" android:text="@string/dictionaries_from_internet"/>
+    <juloo.keyboard2.dict.DictionaryListView style="@style/dictionary_list_view"/>
+  </LinearLayout>
+</ScrollView>