feat(client): Re-implement following the new transport protocol (#6)

* feat: drop deps and begin rework with connecting a socket

# Conflicts:
#	package.json
#	src/types.d.ts
#	yarn.lock

* refactor: adapt file title

* refactor: naming consistency and type reuse

* refactor: use generic default

* refactor: multiple sinks can subscribe

* refactor: use absolute imports

* fix(message): payload for conn init can be undefined

# Conflicts:
#	src/message.ts

* refactor: the sink can error out with graphql errors too

* feat(client): implement

# Conflicts:
#	src/tests/client.ts

* fix: run tests serially

* test: basic subscription

* fix: check if already connected when connecting

* test: write a few more

package.json

@@ -23,15 +23,14 @@
   "scripts": {
     "lint": "eslint 'src'",
     "type-check": "tsc --noEmit",
-    "test": "jest",
+    "test": "jest -i",
     "build": "tsc -b",
     "release": "semantic-release"
   },
   "peerDependencies": {
     "graphql": ">=15.0.0"
   },
   "dependencies": {
-    "websocket-as-promised": "^1.0.1",
     "ws": "^7.3.1"
   },
   "devDependencies": {