Initial work to build Android APK, via Cordova. Still largely untested because I haven't been able to get it to build locally, over Android SDK issues.
- File reading is now happening later in the process;
- File reading now reuses methods from `core/attachment`;
- Errors thrown in the import now include an error message;
- Adds prettier command to "prettify" all files;
- Adds prettier command to check for files not conforming to prettier's config;
- Makes CI run the prettier:check command;
- Changes `export const method = () => {};` to `export function method() {}` in the `1pux-parser` file;
- Other minor consistency changes/fixes/improvements;
- Actually ran prettier on every file, and it had a lot of things to tweak.
Martin Kleinschrodt
Bruno Bernardino