fix: fix the example template @W-19405432@ (#154)

Author: stephen-carter-at-sf

packages/EXAMPLE-MCP-PROVIDER/package.json

@@ -4,6 +4,7 @@
     "version": "0.0.1-alpha.1",
     "author": "Salesforce",
     "license": "Apache-2.0",
+    "type": "module",
     "repository": {
         "type": "git",
         "url": "git+https://github.com/salesforcecli/mcp.git",

packages/EXAMPLE-MCP-PROVIDER/src/provider.ts

@@ -1,5 +1,5 @@
 import { McpProvider,  McpTool, Services } from "@salesforce/mcp-provider-api";
-import { ExampleMcpTool } from "./tools/sf-example-tool";
+import { ExampleMcpTool } from "./tools/sf-example-tool.js";
 
 /**
  * Example MCPProvider for demonstration puproses

packages/EXAMPLE-MCP-PROVIDER/test/provider.test.ts

@@ -1,7 +1,7 @@
 import { McpProvider, McpTool, Services } from "@salesforce/mcp-provider-api";
-import { ExampleMcpProvider } from "../src";
-import { StubServices } from "./test-doubles";
-import { ExampleMcpTool } from "../src/tools/sf-example-tool";
+import { ExampleMcpProvider } from "../src/provider.js";
+import { ExampleMcpTool } from "../src/tools/sf-example-tool.js";
+import { StubServices } from "./test-doubles.js";
 
 describe("Tests for ExampleMcpProvider", () => {
     let services: Services;