use .ts extension in codegenned import statements

Author: dynst

scripts/codegen.cjs

@@ -10,7 +10,7 @@ telescope({
   protoDirs: ["protos/cosmos-sdk", "protos/wasmd", "protos/ibc-go"],
   outPath: outPath,
   options: {
-    restoreImportExtension: ".js",
+    restoreImportExtension: ".ts",
     logLevel: 0,
     useSDKTypes: false,
     tsDisable: {