test: basic test that uses IPC

CoMapeo Mobile doesn't use `MapeoManager` directly; it uses an IPC
bridge.

This adds a test that creates a manager in a separate process and uses
`@comapeo/ipc` to test it.

This is something we've been discussing for awhile, and this finally
implements it. I think this is useful on its own but also makes a
future change easier.

package.json

@@ -110,6 +110,7 @@
     "@bufbuild/buf": "^1.26.1",
     "@comapeo/cloud": "^0.1.0",
     "@comapeo/core2.0.1": "npm:@comapeo/[email protected]",
+    "@comapeo/ipc": "^2.1.0",
     "@mapeo/default-config": "5.0.0",
     "@mapeo/mock-data": "^2.1.1",
     "@sinonjs/fake-timers": "^10.0.2",
@@ -165,7 +166,7 @@
     "@hyperswarm/secret-stream": "^6.6.3",
     "@mapeo/crypto": "1.0.0-alpha.10",
     "@mapeo/sqlite-indexer": "1.0.0-alpha.9",
-    "@sinclair/typebox": "^0.29.6",
+    "@sinclair/typebox": "^0.33.17",
     "@sindresorhus/merge-streams": "^4.0.0",
     "b4a": "^1.6.3",
     "bcp-47": "^2.1.0",