[NO-ISSUE] test: start adding integration tests for our use cases (#10)

* refactor: adapt/update js client

* chore: update justfile

* ci: adapt JS client lib's CI

* test: start adding integration tests for our use cases

* ci: fix actions/setup-node usage for pnpm

* ci: update actions + install pnpm

* ci: remove cache on actions/setup-node as it's pretty fast

* test: add more tests to integration tests

* refactor: rename file + adapt requirements' tests

scheduler/clients/javascript/.npmrc

@@ -0,0 +1 @@
+store-dir=~/.pnpm-store

scheduler/clients/javascript/jest.config.js

@@ -2,4 +2,5 @@ module.exports = {
   preset: "ts-jest",
   testEnvironment: "node",
   bail: true,
+  testMatch: ["**/*.spec*"],
 };

scheduler/clients/javascript/package.json

@@ -6,7 +6,7 @@
   "scripts": {
     "build": "tsc --p ./tsconfig.release.json",
     "deploy": "pnpm run build && pnpm publish --no-git-checks",
-    "test": "jest tests/ -i --verbose"
+    "test": "jest -i --verbose"
   },
   "repository": {
     "type": "git",