chore(codegen): move endpoints.ts to src folder

Author: trivikr

codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AwsEndpointGeneratorIntegration.java

@@ -23,6 +23,7 @@
 import java.util.function.Consumer;
 import software.amazon.smithy.codegen.core.SymbolProvider;
 import software.amazon.smithy.model.Model;
+import software.amazon.smithy.typescript.codegen.CodegenUtils;
 import software.amazon.smithy.typescript.codegen.LanguageTarget;
 import software.amazon.smithy.typescript.codegen.TypeScriptDependency;
 import software.amazon.smithy.typescript.codegen.TypeScriptSettings;
@@ -47,7 +48,7 @@ public void writeAdditionalFiles(
             return;
         }
 
-        writerFactory.accept("endpoints.ts", writer -> {
+        writerFactory.accept(CodegenUtils.SOURCE_FOLDER + "/endpoints.ts", writer -> {
             new EndpointGenerator(settings.getService(model), writer).run();
         });
     }
@@ -83,7 +84,8 @@ public Map<String, Consumer<TypeScriptWriter>> getRuntimeConfigWriters(
         switch (target) {
             case SHARED:
                 return MapUtils.of("regionInfoProvider", writer -> {
-                    writer.addImport("defaultRegionInfoProvider", "defaultRegionInfoProvider", "./endpoints");
+                    writer.addImport("defaultRegionInfoProvider", "defaultRegionInfoProvider",
+                            "./" + CodegenUtils.SOURCE_FOLDER + "/endpoints");
                     writer.write("defaultRegionInfoProvider");
                 });
             default: