feat(sync): fix errors and cleanup code

Signed-off-by: Vishwas Rajashekar <dev@vrajashkr.com>

examples/config-sync-local.json

@@ -1,31 +0,0 @@
-{
-	"distSpecVersion": "1.1.1",
-	"storage": {
-		"rootDirectory": "./temp/zot"
-	},
-	"http": {
-		"address": "127.0.0.1",
-		"port": "8080"
-	},
-	"log": {
-		"level": "debug"
-	},
-	"extensions": {
-		"sync": {
-			"enable": true,
-			"enableStream": true,
-			"registries": [
-				{
-					"urls": [
-						"http://localhost:9000"
-					],
-					"onDemand": true,
-					"tlsVerify": false,
-					"maxRetries": 5,
-					"retryDelay": "30s",
-					"syncTimeout": "10m"
-				}
-			]
-		}
-	}
-}

examples/config-sync-stream.json

@@ -13,8 +13,7 @@
 	"extensions": {
 		"sync": {
 			"enable": true,
-			"enableStreaming": true,
-			"streamChunkSizeBytes": 32768,
+			"stream": true,
 			"registries": [
 				{
 					"urls": [