This commit improves the Bakhtiari language support by addressing issues from PR [#3927](https://github.com/2dust/v2rayNG/pull/3927), where the initial implementation had incorrect file placements and lacked necessary changes for functionality.
- Integrated `strings.xml` into the correct `values-bqi-rIR` directory.
- Updated the `Language` enum to include `BAKHTIARI("bqi-rIR")`.
- Modified the `getLocale()` function to handle Bakhtiari with `Locale("bqi", "IR")`.
- Added Bakhtiari to the `language_select` string-array using its native script: `<item>بختیاری</item>`.
- Updated the `language_select_value` string-array to include `<item>bqi-rIR</item>`.
Verified that the language switching works correctly. For grammatical or translation accuracy, a native speaker's review is needed.
@hosseinabaspanah, since I assume Bakhtiari is your native language, could you please review the translations to ensure accuracy?
Tamim Hossain
c69a758429