test: add jest config

Author: AB1908

jest.config.js

@@ -0,0 +1,13 @@
+module.exports = {
+    "roots": [
+        "<rootDir>/src",
+        "<rootDir>"
+    ],
+    "testMatch": [
+        "**/__tests__/**/*.+(ts|tsx|js)",
+        "**/?(*.)+(spec|test).+(ts|tsx|js)"
+    ],
+    "transform": {
+        "^.+\\.(ts|tsx)$": "ts-jest"
+    },
+}