feat: move from matrix to email notifs (#2)

### Explanation

_No response_

### Issue

_No response_

### Attestations

- [x] I have read and agree to the [Code of Conduct](https://docs.nhcarrigan.com/community/coc/)
- [x] I have read and agree to the [Community Guidelines](https://docs.nhcarrigan.com/community/guide/).
- [x] My contribution complies with the [Contributor Covenant](https://docs.nhcarrigan.com/dev/covenant/).

### Dependencies

- [x] I have pinned the dependencies to a specific patch version.

### Style

- [x] I have run the linter and resolved any errors.
- [x] My pull request uses an appropriate title, matching the conventional commit standards.
- [x] My scope of feat/fix/chore/etc. correctly matches the nature of changes in my pull request.

### Tests

- [ ] My contribution adds new code, and I have added tests to cover it.
- [ ] My contribution modifies existing code, and I have updated the tests to reflect these changes.
- [ ] All new and existing tests pass locally with my changes.
- [ ] Code coverage remains at or above the configured threshold.

### Documentation

_No response_

### Versioning

Minor - My pull request introduces a new non-breaking feature.

Reviewed-on: #2
Co-authored-by: Naomi Carrigan <commits@nhcarrigan.com>
Co-committed-by: Naomi Carrigan <commits@nhcarrigan.com>

src/index.ts

@@ -4,37 +4,6 @@
  * @author Naomi Carrigan
  */
 
-import { createClient } from "matrix-js-sdk";
 import { instantiateServer } from "./server/serve.js";
-import type { Logger } from "matrix-js-sdk/lib/logger.js";
 
-const logger: Logger = {
-  debug: () => {
-    return null;
-  },
-  error: () => {
-    return null;
-  },
-  getChild: () => {
-    return logger;
-  },
-  info: () => {
-    return null;
-  },
-  trace: () => {
-    return null;
-  },
-  warn: () => {
-    return null;
-  },
-};
-
-const client = createClient({
-  accessToken: process.env.MATRIX_ACCESS_TOKEN ?? "",
-  baseUrl:     "https://matrix.nhcarrigan.com",
-  logger:      logger,
-  userId:      "@alerts:matrix.nhcarrigan.com",
-});
-
-await client.startClient({ initialSyncLimit: 10 });
-instantiateServer(client);
+instantiateServer();