The switch case in LoadVoice() currently mixes voice and language
options. This change will start separating them into two functions.

CheckTranslator will be moved to langopts.c. In the future there should
be no need to use it in voices.c. There will be other temporary
solutions also.

newer ndk supports kitkat+ only

The file will be organized to have one callable function only. This
should make code structure simpler.

Existing code will be changed to use function parameters instead of
global variables.

Possible problems include too much dependencies with numbers.c.

we should do that on every release.

Issue #1185

this fixes #1161 separates the android application build system from automake
and simplifies building an application on windows.

this greatly simplifies the assembly of the android application. moreover, ndk
will be downloaded automatically via sdk-manager.

this simplifies CI/CD and building android application on windows.

this is the maximum espeak-ng's speech rate without using libsonic

1: Added missing voice variants in the NVDA category including Iven 4, Steph, Steph 2 and Steph 3.
2: Completed the Persian translation.

Soundicons are used for external audio with SSML <audio> tag and for
replacing punctuation names with sound files in LoadConfig().

Currently there's a bug wih soundicon slots: if both LoadConfig and
<audio> are used, the punctuation reserves all slots and no sound from
<audio> is played.

Version must be changed in:
- configure.ac
- src/windows/config.h
- android/jni/include/config.h
- android/build.gradle
- android/AndroidManifest.xml

Added some translations.

- remove unsupported hardware platforms
- udpate dependencies and versions of tools