feat: split artifactapi config into conf.d and update to v2.7.1 (#92)

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.

Reviewed-on: #92

apps/base/artifactapi/resources/conf.d/local-generic.yaml

@@ -0,0 +1,7 @@
+locals:
+  local-generic:
+    package: "generic"
+    description: "Local generic file repository"
+    cache:
+      immutable_ttl: 0
+      mutable_ttl: 0