Add issue templates via. Github's Create Issue Template feature

.github/ISSUE_TEMPLATE/bug-report.md

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+---
+name: Bug report
+about: Create a report if you're having trouble with `fbchat`
+
+---
+
+## Description of the problem
+Example: Logging in fails when the character `%` is in the password. A specific password that fails is `a_password_with_%`
+
+## Code to reproduce
+```py
+# Example code
+from fbchat import Client
+client = Client("[REDACTED_USERNAME]", "a_password_with_%")
+```
+
+## Traceback
+```
+Traceback (most recent call last):
+  File "<test.py>", line 1, in <module>
+  File "[site-packages]/fbchat/client.py", line 78, in __init__
+    self.login(email, password, max_tries)
+  File "[site-packages]/fbchat/client.py", line 407, in login
+    raise FBchatUserError('Login failed. Check email/password. (Failed on url: {})'.format(login_url))
+fbchat.models.FBchatUserError: Login failed. Check email/password. (Failed on url: https://m.facebook.com/login.php?login_attempt=1)
+```
+
+## Environment information
+- Python version
+- `fbchat` version
+- If relevant, output from `$ python -m pip list`
+
+If you have done any research, include that.
+Make sure to redact all personal information.