Sticker-convert

- Fix bug which webp with odd number of dimension causing crash (https://github.com/laggykiller/sticker-convert/commit/3eadfe5df4e410ad4ec3068b64b575d6da98b893)
- Improve handling of magick binary location (https://github.com/laggykiller/sticker-convert/commit/3eadfe5df4e410ad4ec3068b64b575d6da98b893)
- Improve .spec file (https://github.com/laggykiller/sticker-convert/commit/3eadfe5df4e410ad4ec3068b64b575d6da98b893)
- Add Github action for auto building

Use utf-8 encoding to prevent UnicodeDecodeError (https://github.com/laggykiller/sticker-convert/commit/fc481f151996705456bcc6c0b179522d9aad98c4)

- Fix unable to create .wastickers due to missing conversion to int() (https://github.com/laggykiller/sticker-convert/commit/28c71feae9ecddeb7efb41b6ac8928b6ca054651)
- Fix unable to upload anything due to bug in checking image size (https://github.com/laggykiller/sticker-convert/commit/bf38cf552147eda5df7b278192212c22d857e9f0)
- Fix unable to upload signal stickers in exe / binaries (https://github.com/laggykiller/sticker-convert/commit/37f7392d9fe0c1cbf1deb48a4596c72e6646b3fe)
- Allow using wand if `magick` command not found (Occurs in Linux system with older ImageMagick)
- Add ipynb for running on Google Colab

First release
Broken, do not use