feat: split artifactapi config into conf.d and update to v2.7.1

Split monolithic remotes.yaml into per-type-package files under
resources/conf.d/ to align with artifactapi v2.7.1 directory loading.
Updated schema: virtuals/locals use dedicated top-level keys, type field
removed. Added helm remotes for all kustomize helmCharts repos and
OCI patterns to docker remotes. CONFIG_PATH now points to the directory.

apps/base/artifactapi/artifactapi-deployment.yaml

@@ -19,7 +19,7 @@ spec:
       automountServiceAccountToken: true
       containers:
         - name: artifactapi
-          image: git.unkin.net/unkin/artifactapi:v2.3.0
+          image: git.unkin.net/unkin/artifactapi:v2.7.1
           imagePullPolicy: IfNotPresent
           ports:
             - containerPort: 8000
@@ -60,10 +60,9 @@ spec:
               cpu: 100m
               memory: 256Mi
           volumeMounts:
-            - mountPath: /app/remotes.yaml
+            - mountPath: /etc/artifactapi/conf.d
               mountPropagation: None
               name: remotes-config
-              subPath: remotes.yaml
       restartPolicy: Always
       volumes:
         - configMap: