WasmParser: Move NameMap and ParsedNames to the top level

To avoid making these types under generic context

Author: kateinoigakukun

Sources/WasmKit/Execution/NameRegistry.swift

@@ -1,5 +1,6 @@
 import struct WasmParser.CustomSection
 import struct WasmParser.NameSectionParser
+import struct WasmParser.NameMap
 import class WasmParser.StaticByteStream
 
 struct NameRegistry {
@@ -21,7 +22,7 @@ struct NameRegistry {
         }
     }
 
-    private mutating func register(instance: InternalInstance, nameMap: NameSectionParser.NameMap) {
+    private mutating func register(instance: InternalInstance, nameMap: NameMap) {
         for (index, name) in nameMap {
             let addr = instance.functions[Int(index)]
             self.functionNames[addr] = name

Sources/WasmParser/WasmParser.swift

@@ -1174,21 +1174,21 @@ extension Parser {
     }
 }
 
+/// A map of names by its index.
+public typealias NameMap = [UInt32: String]
+
+/// Parsed names.
+public enum ParsedNames {
+    /// Function names.
+    case functions(NameMap)
+}
+
 /// A parser for the name custom section.
 ///
 /// > Note: <https://webassembly.github.io/spec/core/appendix/custom.html#name-section>
 public struct NameSectionParser<Stream: ByteStream> {
     let stream: Stream
 
-    /// A map of names by its index.
-    public typealias NameMap = [UInt32: String]
-
-    /// Parsed names.
-    public enum ParsedNames {
-        /// Function names.
-        case functions(NameMap)
-    }
-
     public init(stream: Stream) {
         self.stream = stream
     }