Use compose-go + improvements (#9)

Use compose-go https://github.com/compose-spec/compose-go  to make Katenary parsing compose file the official way.
Add labels:
- `volume-from` (with `same-pod`) to avoid volume repetition
- `ignore` to ignore a service
- `mapenv` (replaces the `env-to-service`) to map environment to helm variable (as a template string)
- `secret-vars` declares variables as secret values

More:
- Now, environment (as secret vars) are set in values.yaml
- Ingress has got annotations in values.yaml
- Probes (liveness probe) are improved
- fixed code to optimize
- many others fixes about path, bad volume check, refactorisation, tests...

generator/writers/configmap.go

@@ -7,8 +7,9 @@ import (
 	"gopkg.in/yaml.v3"
 )
 
+// BuildConfigMap writes the configMap.
 func BuildConfigMap(c interface{}, kind, servicename, name, templatesDir string) {
-	fname := filepath.Join(templatesDir, servicename+"."+name+"."+kind+".yaml")
+	fname := filepath.Join(templatesDir, name+"."+kind+".yaml")
 	fp, _ := os.Create(fname)
 	enc := yaml.NewEncoder(fp)
 	enc.SetIndent(IndentSize)