Flag malformed annotation as an error #99
Description
Since Bake expects annotations to be of the key=value form, we should create an error for this if we detect it in the language server.
target "t1" {
annotations = [ "abc" ]
}$ docker buildx bake --print t1
[+] Building 0.0s (1/1) FINISHED
=> [internal] load local bake definitions 0.0s
=> => reading compose.yaml 60B / 60B 0.0s
=> => reading docker-bake.hcl 42B / 42B 0.0s
ERROR: invalid annotation "abc", expected key=value