added tests to:
- language-numbers-cardinal.test
- tests/language-phonemes.test
- tests/language-pronunciation.test

- fixed/removed not working rules in be_list
- added stress to the words in be_list
- fixed multi thousand transcription
- removed not working rules in be_rules
- added rules of palatalization, phonemes lengthen
- fixed dropping of [a] at the end of words
- fixed message "Full dictionary is not installed for"
- added configuration in tr_languages.c
- fixed/added phonemes for `Q`, `ts`, `ts;`, `dz`, `dz.`, `;` etc

This patch strip out dependency on Russian, as its complicated relationship
between spelling and pronunciation overburden rules for Belarusian. The rules
themselves are also added. They don't have devoicing at the end of the words
for now. Also, gemination of consonants doesn't work as expected, as it seems
on the top of this rule some other rules apply. This after-processing is
responsible also for the strange behaviour of ending [a].

words like ножи, персонажи, напиши, покажи.

[This removes the warning that this app may not be compatible because it
was developed for an older
android-version.](https://developer.android.com/about/versions/10/behavior-changes-all#low-target-sdk-warnings)
Also, this adds support for signature scheme v2 and v3 [which reduces
the attack surface along with other
benefits](https://source.android.com/docs/security/features/apksigning#v1).
Lastly this adds 64-bit support for the APK, so this app can be
installed on 64-bit-only hardware.

LoadConfig() should be refactored to support both voice and language options set
in LoadVoice() and LoadLanguageOptions().

Code checked for both langopt LOPT_IT_DOUBLING and attribe $double.
LOPT_IT_DOUBLING is redundant. $double already has a test in
dictionary.test

Code had a check for tr->langopts.param[LOPT_IT_DOUBLING] & 2 but that bit value is
not used in any language. That logic was removed.

previous changing of variable names caused an error in the program logic.

Caused when creating LoadLanguageOptions().

Accidentally commented out in ac82698f.

Loading Voice and Language options is complicated. They are not
separated in the code.

This PR creates langopts.c for holding language option related
configuration. In the future:
1. all new language options should go to langopts.c
2. voice options should have a similar file
3. LoadVoice should know if it's loading a voice or a language.

These have no tests and should be refactore to be similar to other
langopts.

Note: This feature has no tests.

Note: This feature has no tests. It doesn't look very useful and I think
could be removed.