Changelog:
- Fixed provider opengpts
- Added new provider Groq
- Added support to use environment variable for proxy
<details><summary>SHA256 Hashes</summary><code>
SHA256 hashes of the built binaries:
34cc2f89f4214d4ccd86b6253d7fc6f63b5532d19b9abb75e5adbf7a5fc80a53 tgpt-linux-amd64
fd5b4df4f7051bad72ffe455e2f86e00d481166e19f02182382f688253ef415e tgpt-linux-i386
1c30ebf81a6397822c63230c26758f383429dd1c8ad7e494afe94927e119c1bf tgpt-linux-arm64
cc91605aae673d6627eb1def4c9a9b89845b0b4e522fccafc9d627aa997aca1c tgpt-amd64.exe
e01d1d2a5df71fc417775457138455ab656550482649e27457514a04324c9b94 tgpt-i386.exe
275c4afa318f1f115bc5179e35d656c698ba56f0375f07328a818d11d5a36cd9 tgpt-mac-amd64
21973e0235194d62f1925c804b6aee50d0762f2fdeb8952cfdb2e8e6067282cb tgpt-mac-arm64
</code></details>