Sync upstream to https://github.com/Chatterino/chatterino2/commit/c0d2d8200953931260cf34ccc916b2cca6be6c57
Add: fetch_fork_build_sign.sh
Sync upstream to https://github.com/Chatterino/chatterino2/commit/6289bf25a2cc4e8c970a8890ae3d542d938ebdc9
Sync upstream to https://github.com/Chatterino/chatterino2/commit/e424faaf741d837b646dcc8300cdc0a657537f56
Sync upstream to https://github.com/Chatterino/chatterino2/commit/1234bb90b7f8ea2d580714f49fc75df53080248e
Sync upstream to https://github.com/Chatterino/chatterino2/commit/9c4ba35a974eb27db007955f82029ed7761b8535
Sync upstream to https://github.com/Chatterino/chatterino2/commit/6a8ae9dbc2e185984556cfdd17934f64ccaec299
Sync upstream to https://github.com/Chatterino/chatterino2/commit/fabca32344cd28ee4812586e102bcc1496ef3e18