add configmaps derived from file and dir

add tests and e2e
function isconfigfile check if we need to use configmap and mount in readonly
readonly not asigned because not fail e2e

Signed-off-by: jose luis <2064537+sosan@users.noreply.github.com>

script/test/fixtures/configmap-file-configs/auth.txt

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+content from file auth.txt

script/test/fixtures/configmap-file-configs/certs/cert1.pem

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+content of file cert1.pem

script/test/fixtures/configmap-file-configs/compose.yaml

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+services:
+  busy:
+    image: busybox
+    ports:
+      - "8081:8080"
+      - "8026:8025"
+    volumes:
+      - ./certs:/certs
+      - ./auth.txt:/auth.txt
+      - ./users.php:/users.php:ro
+    command:
+      [
+        "/bin/sh", 
+        "-c", 
+        "cat /auth.txt /users.php /certs/cert1.pem"
+      ]

script/test/fixtures/configmap-file-configs/output-k8s.yaml

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+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    io.kompose.service: busy
+  name: busy
+spec:
+  ports:
+    - name: "8081"
+      port: 8081
+      targetPort: 8080
+    - name: "8026"
+      port: 8026
+      targetPort: 8025
+  selector:
+    io.kompose.service: busy
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    io.kompose.service: busy
+  name: busy
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      io.kompose.service: busy
+  strategy:
+    type: Recreate
+  template:
+    metadata:
+      labels:
+        io.kompose.network/configmap-file-configs-default: "true"
+        io.kompose.service: busy
+    spec:
+      containers:
+        - args:
+            - /bin/sh
+            - -c
+            - cat /auth.txt /users.php /certs/cert1.pem
+          image: busybox
+          name: busy
+          ports:
+            - containerPort: 8080
+              hostPort: 8081
+              protocol: TCP
+            - containerPort: 8025
+              hostPort: 8026
+              protocol: TCP
+          volumeMounts:
+            - mountPath: /certs
+              name: busy-cm0
+            - mountPath: /auth.txt
+              name: busy-cm1
+              subPath: auth.txt
+            - mountPath: /users.php
+              name: busy-cm2
+              subPath: users.php
+              readOnly: true
+      restartPolicy: Always
+      volumes:
+        - configMap:
+            name: busy-cm0
+          name: busy-cm0
+        - configMap:
+            items:
+              - key: auth.txt
+                path: auth.txt
+            name: busy-cm1
+          name: busy-cm1
+        - configMap:
+            items:
+              - key: users.php
+                path: users.php
+            name: busy-cm2
+          name: busy-cm2
+
+---
+apiVersion: v1
+data:
+  cert1.pem: |
+    content of file cert1.pem
+kind: ConfigMap
+metadata:
+  labels:
+    io.kompose.service: busy
+  name: busy-cm0
+
+---
+apiVersion: v1
+data:
+  auth.txt: |
+    content from file auth.txt
+kind: ConfigMap
+metadata:
+  annotations:
+    use-subpath: "true"
+  labels:
+    io.kompose.service: busy
+  name: busy-cm1
+
+---
+apiVersion: v1
+data:
+  users.php: |
+    content from file users.php
+kind: ConfigMap
+metadata:
+  annotations:
+    use-subpath: "true"
+  labels:
+    io.kompose.service: busy
+  name: busy-cm2

script/test/fixtures/configmap-file-configs/users.php

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+content from file users.php