fix: use data source for size custom formats to work around provider set key bug

The devopsarr sonarr provider cannot handle float min/max values in
SizeSpecification as set element keys. Remove size custom formats from
terraform management and look up their IDs via a data source instead.
Also change variable types from map(any) to any to allow heterogeneous
quality profile structures.

modules/sonarr/variables.tf

@@ -1,34 +1,34 @@
 variable "custom_formats" {
-  type    = map(any)
+  type    = any
   default = {}
 }
 
 variable "quality_profiles" {
-  type    = map(any)
+  type    = any
   default = {}
 }
 
 variable "download_clients" {
-  type    = map(any)
+  type    = any
   default = {}
 }
 
 variable "indexers" {
-  type    = map(any)
+  type    = any
   default = {}
 }
 
 variable "notifications" {
-  type    = map(any)
+  type    = any
   default = {}
 }
 
 variable "delay_profiles" {
-  type    = map(any)
+  type    = any
   default = {}
 }
 
 variable "root_folders" {
-  type    = map(any)
+  type    = any
   default = {}
 }