Create devcontainer.json #5854

Job	Run time
config	6s
fuzz smoke test	2m 17s
win+VS build (arm64)	2m 40s
win+VS build (x64)	2m 41s
win+Meson build	2m 36s
win build	2m 44s
osx-clang (macos-13)	3m 0s
osx-reftable (macos-13)	3m 7s
osx-meson (macos-13)	2m 50s
static-analysis	2m 49s
sparse	2m 49s
osx-gcc (macos-13)	3m 4s
documentation	1s
linux-meson (ubuntu:rolling)	2m 37s
linux32 (i386/ubuntu:focal)	2m 38s
linux-musl-meson (alpine:latest)	2m 36s
linux-reftable (ubuntu:rolling)	57s
linux-leaks (ubuntu:rolling)	2m 36s
pedantic (fedora:latest)	1m 41s
linux-asan-ubsan (ubuntu:rolling)	2m 1s
linux-sha256 (ubuntu:rolling)	54s
almalinux-8 (almalinux:8)	15s
linux-breaking-changes (ubuntu:rolling)	2m 37s
debian-11 (debian:11)	2m 38s
linux-reftable-leaks (ubuntu:rolling)	2m 36s
linux-TEST-vars (ubuntu:20.04)	1s
win+Meson test	1s
win+VS test	1s
win test	1s
	54m 54s

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