Advanced text input options

[swift-kim]

https://api.flutter.dev/flutter/services/TextInputConfiguration-class.html

Needs investigation:

• autocorrect: When disabled, auto-correction is disabled. → ECORE_IMF_INPUT_PANEL_LAYOUT_PASSWORD
• autofillConfiguration: Setup and provide the initial text values and hints. → Ecore_IMF_Input_Hints? (We may need to implement TextInput.requestAutofill and TextInput.finishAutofillContext first.)
• enableSuggestions: When disabled, input suggestions are disabled. → Ecore_IMF_Input_Hints?
• inputAction: Display a certain kind of action button. → Ecore_IMF_Input_Panel_Return_Key_Type
• obscureText: When enabled, input suggestions are disabled. → Ecore_IMF_Input_Hints?
• textCapitalization: Select an uppercase or lowercase keyboard. The value can be either words, sentences, characters, or none. → Ecore_IMF_Autocapital_Type

Not applicable for Tizen:

• actionLabel
• enableIMEPersonalizedLearning

See also:

• https://github.com/flutter/flutter/blob/master/packages/flutter/lib/src/services/text_input.dart
• https://github.com/flutter/engine/blob/master/shell/platform/android/io/flutter/embedding/engine/systemchannels/TextInputChannel.java
• https://github.com/flutter/engine/blob/master/shell/platform/android/io/flutter/plugin/editing/TextInputPlugin.java