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/utils.go

@@ -0,0 +1,22 @@
+package generator
+
+import (
+	"katenary/compose"
+	"regexp"
+	"strings"
+)
+
+// replaceChars replaces some chars in a string.
+const replaceChars = `[^a-zA-Z0-9._]`
+
+// GetRelPath return the relative path from the root of the project.
+func GetRelPath(path string) string {
+	return strings.Replace(path, compose.GetCurrentDir(), ".", 1)
+}
+
+// PathToName transform a path to a yaml name.
+func PathToName(path string) string {
+	path = strings.TrimPrefix(GetRelPath(path), "./")
+	path = regexp.MustCompile(replaceChars).ReplaceAllString(path, "-")
+	return path
+}