Support for dynamic ip ranges from urls

- Adds ipranges command to fetch ip ranges from Cloudfront and Cloudflare
- Write the ipranges file on docker start
- Support disabling ipv4 as well as ipv6 now
- Prevent disabling both

backend/internal/model/cloudfrontranges.go

@@ -0,0 +1,17 @@
+package model
+
+// CloudfrontIPRangePrefix is used within config for cloudfront
+type CloudfrontIPRangeV4Prefix struct {
+	Value string `json:"ip_prefix"`
+}
+
+// CloudfrontIPRangeV6Prefix is used within config for cloudfront
+type CloudfrontIPRangeV6Prefix struct {
+	Value string `json:"ipv6_prefix"`
+}
+
+// CloudfrontIPRanges is the main config for cloudfront
+type CloudfrontIPRanges struct {
+	IPV4Prefixes []CloudfrontIPRangeV4Prefix `json:"prefixes"`
+	IPV6Prefixes []CloudfrontIPRangeV6Prefix `json:"ipv6_prefixes"`
+}