Merge pull request #73 from mangata-finance/feature/asset-metadata-xyk

[metadata-xyk][mgx-72] add pool creation enabled metadata

primitives/mangata-types/src/assets.rs

@@ -19,6 +19,8 @@ use scale_info::TypeInfo;
 pub struct CustomMetadata {
 	/// XCM-related metadata, optional.
 	pub xcm: Option<XcmMetadata>,
+	/// XYK-related metadata, optional
+	pub xyk: Option<XykMetadata>,
 }
 
 #[derive(
@@ -39,3 +41,22 @@ pub struct XcmMetadata {
 	/// The fee charged for every second that an XCM message takes to execute.
 	pub fee_per_second: u128,
 }
+
+#[derive(
+	Clone,
+	Copy,
+	Default,
+	PartialOrd,
+	Ord,
+	PartialEq,
+	Eq,
+	Debug,
+	Encode,
+	Decode,
+	TypeInfo,
+	MaxEncodedLen,
+)]
+pub struct XykMetadata {
+	/// If the asset can't be used in the xyk operations.
+	pub operations_disabled: bool,
+}