feat: add local pypi/rpm repos, remote pypi, and virtual pypi

Add terraform resources and configs for:
- artifactapi_local_pypi (pypi-internal)
- artifactapi_local_rpm (rpm-internal)
- artifactapi_local_terraform (terraform-unkin, was missing from module)
- artifactapi_remote_pypi (pypi.org upstream)
- artifactapi_virtual pypi merging pypi-internal + pypi remote

Wire up config.hcl, variables, and terragrunt inputs for all new types.

modules/artifactapi/variables.tf

@@ -82,6 +82,44 @@ variable "remote_rpm" {
   default = {}
 }
 
+variable "remote_pypi" {
+  description = "Map of PyPI remote repositories"
+  type = map(object({
+    base_url         = string
+    description      = optional(string, "")
+    immutable_ttl    = optional(number, 0)
+    mutable_ttl      = optional(number, 3600)
+    patterns         = optional(list(string), [])
+    mutable_patterns = optional(list(string), [])
+    stale_on_error   = optional(bool, true)
+  }))
+  default = {}
+}
+
+variable "local_terraform" {
+  description = "Map of local Terraform registry repositories"
+  type = map(object({
+    description = optional(string, "")
+  }))
+  default = {}
+}
+
+variable "local_pypi" {
+  description = "Map of local PyPI repositories"
+  type = map(object({
+    description = optional(string, "")
+  }))
+  default = {}
+}
+
+variable "local_rpm" {
+  description = "Map of local RPM repositories"
+  type = map(object({
+    description = optional(string, "")
+  }))
+  default = {}
+}
+
 variable "virtual" {
   description = "Map of virtual repositories"
   type = map(object({