Work in progress on compose-go v2

As explained in #102, the compose-go package changes types and needs
massive changes.
This branches is OK for now, but needs some tests.
It MUST be quickly fixed to be integrated in main branch.

go.mod

@@ -5,7 +5,7 @@ go 1.23.0
 toolchain go1.23.4
 
 require (
-	github.com/compose-spec/compose-go v1.20.2
+	github.com/compose-spec/compose-go/v2 v2.4.6
 	github.com/invopop/jsonschema v0.12.0
 	github.com/mitchellh/go-wordwrap v1.0.1
 	github.com/spf13/cobra v1.8.1
@@ -24,19 +24,17 @@ require (
 	github.com/docker/go-units v0.5.0 // indirect
 	github.com/fxamacker/cbor/v2 v2.7.0 // indirect
 	github.com/go-logr/logr v1.4.2 // indirect
+	github.com/go-viper/mapstructure/v2 v2.0.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
-	github.com/imdario/mergo v0.3.16 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/kr/text v0.2.0 // indirect
 	github.com/mailru/easyjson v0.9.0 // indirect
 	github.com/mattn/go-shellwords v1.0.12 // indirect
-	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/opencontainers/go-digest v1.0.0 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/wk8/go-ordered-map/v2 v2.1.8 // indirect