test(EWT-1376): add unit tests for establishing sql session

chose `vitest` as a test runner since it's fast and is emerging as a replacement
for jest as the ecosystem moves toward ESM

encountered some friction with the package not being declared as "type=module",
which i'm working around for now and will fix properly in another PR.

extras:
- switched to async static factory function for creating a connection
- tightened up exports

Author: sfishel18

.eslintrc.json

@@ -14,6 +14,9 @@
       {
         "ignoreRestSiblings": true
       }
-    ]
+    ],
+    "node/no-unpublished-import": ["error", {
+      "allowModules": ["vitest", "vitest-fetch-mock"]
+    }]
   }
 }

examples/connectionWithDefaults.ts

@@ -10,10 +10,12 @@
 
 import { Connection, Runtime } from "@/index";
 
-const conn = new Connection({
-  apiKey:
-    process.env["WHEROBOTS_API_KEY"] || "00000000-0000-0000-0000-000000000000",
-  runtime: Runtime.SEDONA,
-});
-
-setTimeout(() => conn.close(), 5000);
+(async () => {
+  const conn = await Connection.connect({
+    apiKey:
+      process.env["WHEROBOTS_API_KEY"] ||
+      "00000000-0000-0000-0000-000000000000",
+    runtime: Runtime.SEDONA,
+  });
+  setTimeout(() => conn.close(), 5000);
+})();