feat: nameserver-policy support use rule-providers and reduce domain-set memory

constant/features/low_memory.go

@@ -0,0 +1,5 @@
+package features
+
+func init() {
+	TAGS = append(TAGS, "with_low_memory")
+}

constant/features/no_doq.go

@@ -1,7 +0,0 @@
-//go:build no_doq
-
-package features
-
-func init() {
-	TAGS = append(TAGS, "no_doq")
-}

constant/features/no_fake_tcp.go

@@ -0,0 +1,7 @@
+//go:build no_fake_tcp
+
+package features
+
+func init() {
+	TAGS = append(TAGS, "no_fake_tcp")
+}

constant/features/no_gvisor.go

@@ -1,7 +0,0 @@
-//go:build no_gvisor
-
-package features
-
-func init() {
-	TAGS = append(TAGS, "no_gvisor")
-}

constant/features/with_gvisor.go

@@ -0,0 +1,7 @@
+//go:build with_gvisor
+
+package features
+
+func init() {
+	TAGS = append(TAGS, "with_gvisor")
+}