Add function to read sensitive data from .sensitive.json file

- Implemented GetSensitiveData function to load sensitive data from a JSON file.
- Added error handling for missing file scenario.

.sensitive.example.json

@@ -0,0 +1,10 @@
+{
+    "*.google.com": {
+        "x_username": "bot.imnya.ng@gmail.com",
+        "x_password": "some.google.password"
+    },
+    "github.com": {
+        "x_username": "imnyang-bot",
+        "x_password": "some.github.password"
+    }
+}