BridgeJS: Add reusable intrinsics for stack-based types

Author: krodak

Benchmarks/Sources/Generated/BridgeJS.swift

@@ -399,7 +399,14 @@ export class TypeProcessor {
                 this.swiftLines.push(`    case ${this.renderIdentifier(name)} = "${raw.replaceAll("\"", "\\\\\"")}"`);
             }
             this.swiftLines.push("}");
-            this.swiftLines.push(`extension ${swiftEnumName}: _BridgedSwiftEnumNoPayload {}`);
+            this.swiftLines.push(`extension ${swiftEnumName}: _BridgedSwiftEnumNoPayload {`);
+            this.swiftLines.push(`    @_spi(BridgeJS) public static func bridgeJSLiftParameter() -> Self {`);
+            this.swiftLines.push(`        Self(rawValue: String.bridgeJSLiftParameter())!`);
+            this.swiftLines.push(`    }`);
+            this.swiftLines.push(`    @_spi(BridgeJS) public consuming func bridgeJSLowerStackReturn() {`);
+            this.swiftLines.push(`        rawValue.bridgeJSLowerStackReturn()`);
+            this.swiftLines.push(`    }`);
+            this.swiftLines.push(`}`);
             this.swiftLines.push("");
             return;
         }
@@ -410,7 +417,14 @@ export class TypeProcessor {
                 this.swiftLines.push(`    case ${this.renderIdentifier(name)} = ${raw}`);
             }
             this.swiftLines.push("}");
-            this.swiftLines.push(`extension ${swiftEnumName}: _BridgedSwiftEnumNoPayload {}`);
+            this.swiftLines.push(`extension ${swiftEnumName}: _BridgedSwiftEnumNoPayload {`);
+            this.swiftLines.push(`    @_spi(BridgeJS) public static func bridgeJSLiftParameter() -> Self {`);
+            this.swiftLines.push(`        Self(rawValue: Int.bridgeJSLiftParameter())!`);
+            this.swiftLines.push(`    }`);
+            this.swiftLines.push(`    @_spi(BridgeJS) public consuming func bridgeJSLowerStackReturn() {`);
+            this.swiftLines.push(`        rawValue.bridgeJSLowerStackReturn()`);
+            this.swiftLines.push(`    }`);
+            this.swiftLines.push(`}`);
             this.swiftLines.push("");
             return;
         }