feat/download data empty state button

[ashb155]

Contributor checklist

• This pull request is on a separate branch and not the main branch
• I have tested my code with the ./gradlew lintKotlin detekt test command as directed in the testing section of the contributing guide

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Description

This PR adds an empty state banner to Scribe keyboards for when the keyboard has been installed but language data has not yet been downloaded.

Files changed:

• input_method_view.xml — Added a Button with id empty_state_banner above the keyboard view
• GeneralKeyboardIME.kt — Added logic in onStartInputView to check if the language database file exists, if not, the banner is shown and the command options bar is hidden. Tapping the banner opens Installation page where the user can download language data
• The check uses getDatabasePath("${languageAlias}LanguageData.sqlite").exists() to reliably detect whether data has been downloaded.

Testing:
Tested on an emulator with no language data downloaded — the banner appears correctly above the keyboard. After downloading data, the banner is hidden and the normal command bar is shown.

Note: The banner text "Please download language data" is currently hardcoded in English.

Screenshots

Related issue

• Closes Add button to top of keyboard directing user to download screen when no data is downloaded #581

[github-actions]

Thank you for the pull request! 💙🩵

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[github-actions]

Maintainer Checklist

The following is a checklist for maintainers to make sure this process goes as well as possible. Feel free to address the points below yourself in further commits if you realize that actions are needed :)

• Tests for changes have been written and the unit test, linting and formatting workflows within the PR checks do not indicate new errors in the files changed

  • Tests may need to be reran as they're at times not deterministic

• The CHANGELOG has been updated with a description of the changes for the upcoming release and the corresponding issue (if necessary)

[andrewtavis]

Thanks so much for the work here, @ashb155! Could we do a few more edits so that the UI matches the designs as detailed in this message here?

[ashb155]

will work on it @andrewtavis !

[ashb155]

Current designs @andrewtavis