CI: Publish snaps on the snap store

The push only happens under videolan namespace.
21 jobs for master in 6 minutes and 43 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Style
passed #258008
amd64 debian
style-check

00:00:22

 
  Build
passed #258009
amd64 debian
build-debian

00:00:38

passed #258017
debian aarch64
build-debian-aarch64

00:01:26

passed #258018
debian aarch64
build-debian-aarch64-clang-5

00:01:05

passed #258021
debian armv7
build-debian-armv7

00:01:31

passed #258022
debian armv7
build-debian-armv7-clang-5

00:01:14

passed #258010
amd64 debian
build-debian-static

00:00:38

passed #258020
debian aarch64
build-debian-werror

00:00:33

passed #258011
amd64 debian
build-debian32

00:00:28

passed #258019
macos
build-macos

00:00:36

passed #258023
debian
build-ubuntu-snap

00:01:03

passed #258015
amd64 debian
build-win-arm32

00:00:27

passed #258016
amd64 debian
build-win-arm64

00:00:30

passed #258012
amd64 debian
build-win32

00:00:38

passed #258013
amd64 debian
build-win32-unaligned-stack

00:00:31

passed #258014
amd64 debian
build-win64

00:00:44

 
  Test
passed #258024
amd64 debian
test-debian

00:00:45

passed #258025
amd64 debian
test-debian-asan

00:02:13

passed #258026
amd64 debian
test-debian-msan

00:01:01

passed #258027
amd64 debian
test-debian-ubsan

00:01:22

passed #258028
amd64 debian
test-win64

00:00:53