Add all keyword in DeclarationAttributeWithSpecialSyntax as .declKeyword

Author: kimdv

Sources/SwiftParser/TokenPrecedence.swift

@@ -253,69 +253,76 @@ enum TokenPrecedence: Comparable {
       .unchecked:
       self = .declKeyword
 
-    case  // Treat all other keywords as expression keywords in the absence of any better information.
-    .__owned,
-      .__shared,
-      ._alignment,
+    case  // `DeclarationAttributeWithSpecialSyntax`
+    ._alignment,
       ._backDeploy,
       ._cdecl,
-      ._Class,
-      ._compilerInitialized,
-      ._const,
       ._documentation,
       ._dynamicReplacement,
       ._effects,
       ._expose,
-      ._forward,
       ._implements,
-      ._linear,
-      ._move,
-      ._NativeClass,
-      ._NativeRefCountedObject,
       ._nonSendable,
       ._objcImplementation,
       ._objcRuntimeName,
       ._optimize,
       ._originallyDefinedIn,
-      ._PackageDescription,
       ._private,
       ._projectedValueProperty,
-      ._RefCountedObject,
       ._semantics,
       ._specialize,
       ._spi,
       ._spi_available,
       ._swift_native_objc_runtime_base,
-      ._Trivial,
-      ._TrivialAtMost,
       ._typeEraser,
       ._unavailableFromAsync,
+      .`rethrows`,
+      .attached,
+      .available,
+      .backDeployed,
+      .derivative,
+      .differentiable,
+      .exclusivity,
+      .inline,
+      .objc,
+      .transpose:
+      self = .declKeyword
+
+    case  // Treat all other keywords as expression keywords in the absence of any better information.
+    .__owned,
+      .__shared,
+      ._Class,
+      ._compilerInitialized,
+      ._const,
+      ._forward,
+      ._linear,
+      ._move,
+      ._NativeClass,
+      ._NativeRefCountedObject,
+      ._PackageDescription,
+      ._RefCountedObject,
+      ._Trivial,
+      ._TrivialAtMost,
       ._underlyingVersion,
       ._UnknownLayout,
       ._version,
       .accesses,
       .any,
       .assignment,
       .associativity,
-      .attached,
       .availability,
-      .available,
-      .backDeployed,
       .before,
       .block,
       .canImport,
       .compiler,
       .cType,
       .deprecated,
-      .derivative,
-      .exclusivity,
       .exported,
       .file,
       .discard,
       .forward,
       .higherThan,
       .initializes,
-      .inline,
       .introduced,
       .kind,
       .left,
@@ -327,7 +334,6 @@ enum TokenPrecedence: Comparable {
       .module,
       .noasync,
       .none,
-      .objc,
       .obsoleted,
       .of,
       .Protocol,
@@ -340,7 +346,6 @@ enum TokenPrecedence: Comparable {
       .spiModule,
       .swift,
       .target,
-      .transpose,
       .Type,
       .unavailable,
       .unowned,