feat: migrate from libcompose to compose-go (#1547)

* feat: migrate from libcompose to compose-go

libcompose has been deprecated since summer 2021 in favor of https://github.com/compose-spec/compose-go.
Kompose should now be able to load all versions of compose.

* chore: replace golint with staticcheck

golint has been deprecated. Recommended replacement is staticcheck.

script/test/fixtures/multiple-files/output-k8s.yaml

@@ -16,6 +16,7 @@ spec:
     metadata:
       creationTimestamp: null
       labels:
+        io.kompose.network/multiple-files-default: "true"
         io.kompose.service: bar
     spec:
       containers:
@@ -25,6 +26,22 @@ spec:
       restartPolicy: Always
 status: {}
 
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  creationTimestamp: null
+  name: multiple-files-default
+spec:
+  ingress:
+    - from:
+        - podSelector:
+            matchLabels:
+              io.kompose.network/multiple-files-default: "true"
+  podSelector:
+    matchLabels:
+      io.kompose.network/multiple-files-default: "true"
+
 ---
 apiVersion: apps/v1
 kind: Deployment
@@ -43,6 +60,7 @@ spec:
     metadata:
       creationTimestamp: null
       labels:
+        io.kompose.network/multiple-files-default: "true"
         io.kompose.service: foo
     spec:
       containers:
@@ -51,3 +69,4 @@ spec:
           resources: {}
       restartPolicy: Always
 status: {}
+

script/test/fixtures/multiple-files/output-os.yaml

@@ -16,6 +16,7 @@ spec:
     metadata:
       creationTimestamp: null
       labels:
+        io.kompose.network/multiple-files-default: "true"
         io.kompose.service: bar
     spec:
       containers:
@@ -84,6 +85,7 @@ spec:
     metadata:
       creationTimestamp: null
       labels:
+        io.kompose.network/multiple-files-default: "true"
         io.kompose.service: foo
     spec:
       containers: