add proxied option for Cloudflare provider

Author: TimothyYe

README.md

@@ -198,6 +198,8 @@ By simply putting `@` into `sub_domains`, for example:
 
 For Cloudflare, you need to provide the email & Global API Key as password (or to use the API token) and config all the domains & subdomains.
 
+By setting the option `proxied = true`, the record is receiving the performance and security benefits of Cloudflare. This option is only available for Cloudflare.
+
 <details>
 <summary>Using email & Global API Key</summary>
 
@@ -218,7 +220,8 @@ For Cloudflare, you need to provide the email & Global API Key as password (or t
   "ip_url": "https://api.ip.sb/ip",
   "ip_type": "IPv4",
   "interval": 300,
-  "socks5_proxy": ""
+  "socks5_proxy": "",
+  "proxied": false
 }
 ```
 </details>

configs/config_sample.json

@@ -28,6 +28,7 @@
   "socks5_proxy": "",
   "use_proxy": false,
   "debug_info": false,
+  "proxied": false,
   "notify": {
     "telegram": {
       "enabled": false,

internal/provider/cloudflare/cloudflare_handler.go

@@ -233,6 +233,10 @@ func (provider *DNSProvider) createRecord(zoneID, domain, subDomain, ip string)
 		TTL:  1,
 	}
 
+	if provider.configuration.Proxied {
+		newRecord.Proxied = true
+	}
+
 	if subDomain == utils.RootDomain {
 		newRecord.Name = utils.RootDomain
 	} else {

internal/settings/settings.go

@@ -114,6 +114,7 @@ type Settings struct {
 	UseProxy       bool     `json:"use_proxy" yaml:"use_proxy"`
 	DebugInfo      bool     `json:"debug_info" yaml:"debug_info"`
 	RunOnce        bool     `json:"run_once" yaml:"run_once"`
+	Proxied        bool     `json:"proxied" yaml:"proxied"`
 }
 
 // LoadSettings -- Load settings from config file.