lua: add the late frames statistics

In addition to displayed and dropped frames.
16 jobs for !26 with late-frame in 44 minutes and 23 seconds (queued for 51 seconds)
latest detached
Status Job ID Name Coverage
  Build
passed #424810
amd64 docker
android-arm

00:05:53

passed #424811
amd64 docker
android-arm64

00:04:51

passed #424812
amd64 docker
android-x86

00:04:40

passed #424813
amd64 docker
android-x86_64

00:06:45

passed #424802
amd64 docker
debian

00:05:50

passed #424806
macos
ios-arm64

00:16:29

passed #424807
macos
ios-armv7

00:15:34

passed #424808
macos
ios-simulator-x86_64

00:13:56

passed #424805
macos
macos

00:15:23

passed #424804
amd64 docker
raspbian-arm

00:09:37

passed #424803
amd64 docker
snap

00:13:41

passed #424809
macos
tvos-arm64

00:13:59

passed #424801
amd64 docker
uwp64-libvlc-llvm

00:04:01

passed #424798
amd64 docker
win32

00:03:19

passed #424799
amd64 docker
win64

00:04:06

passed #424800
amd64 docker
win64-llvm

00:04:29