Sticker-convert

- Fix incorrect cover extension in Viber upload (280)
- FIx downloading static Kakao stickers causing error
- Update nuitka

- Add support for importing svg
- Add support for downloading Viber animated stickers (279 )
- Install chromium & removing Discord in Docker
- Fix incorrect cover extension in Viber upload (280)

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**Please use the stickers with your friends only. It is illegal and immoral to sell stickers downloaded from this program.**

**尊重知识产权，做个文明人，请不要转售贴图！假冒我还算了，大批下载贴图去图利真没人性。不要问为何老外总是鄙视中国人，面子是别人给的，脸是自己丢的！**

- Fix downloading Kakao stickers
- Fix getting Kakao auth_token

NOTE: It is now necessary to supply auth_token for downloading animated Kakao stickers regardless of using share link or not. Read more from https://github.com/laggykiller/sticker-convert/blob/master/docs/guide_kakao.md

---
**Please use the stickers with your friends only. It is illegal and immoral to sell stickers downloaded from this program.**

**尊重知识产权，做个文明人，请不要转售贴图！假冒我还算了，大批下载贴图去图利真没人性。不要问为何老外总是鄙视中国人，面子是别人给的，脸是自己丢的！**

- Support for socks proxy (277)
- Update imagequant to avoid memory leak during conversion (Greatly reduce memory usage)
- Show warning if process exited with error

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**Please use the stickers with your friends only. It is illegal and immoral to sell stickers downloaded from this program.**

**尊重知识产权，做个文明人，请不要转售贴图！假冒我还算了，大批下载贴图去图利真没人性。不要问为何老外总是鄙视中国人，面子是别人给的，脸是自己丢的！**

- Keyframe for every frame in webp to avoid black line artifact
- Increase time limit for connecting to chrome debug port

---
**Please use the stickers with your friends only. It is illegal and immoral to sell stickers downloaded from this program.**

**尊重知识产权，做个文明人，请不要转售贴图！假冒我还算了，大批下载贴图去图利真没人性。不要问为何老外总是鄙视中国人，面子是别人给的，脸是自己丢的！**

- Avoid adding --no-sandbox for launching Signal to avoid error
- Update emoji.json
- Re-enable typing, fix typing
- Remove requirements-linux-*
- Update requirements

---

**Please use the stickers with your friends only. It is illegal and immoral to sell stickers downloaded from this program.**

**尊重知识产权，做个文明人，请不要转售贴图！假冒我还算了，大批下载贴图去图利真没人性。不要问为何老外总是鄙视中国人，面子是别人给的，脸是自己丢的！**