add requirements and quickstart

.gitignore

@@ -1,3 +1,7 @@
 # Virtual Environment
 /bin
 /lib
+
+# Secrets
+credentials.json
+token.json

quickstart.py

@@ -0,0 +1,56 @@
+from __future__ import print_function
+
+import os.path
+
+from google.auth.transport.requests import Request
+from google.oauth2.credentials import Credentials
+from google_auth_oauthlib.flow import InstalledAppFlow
+from googleapiclient.discovery import build
+from googleapiclient.errors import HttpError
+
+# If modifying these scopes, delete the file token.json.
+SCOPES = ['https://www.googleapis.com/auth/gmail.readonly']
+
+
+def main():
+    """Shows basic usage of the Gmail API.
+    Lists the user's Gmail labels.
+    """
+    creds = None
+    # The file token.json stores the user's access and refresh tokens, and is
+    # created automatically when the authorization flow completes for the first
+    # time.
+    if os.path.exists('token.json'):
+        creds = Credentials.from_authorized_user_file('token.json', SCOPES)
+    # If there are no (valid) credentials available, let the user log in.
+    if not creds or not creds.valid:
+        if creds and creds.expired and creds.refresh_token:
+            creds.refresh(Request())
+        else:
+            flow = InstalledAppFlow.from_client_secrets_file(
+                'credentials.json', SCOPES)
+            creds = flow.run_local_server(port=0)
+        # Save the credentials for the next run
+        with open('token.json', 'w') as token:
+            token.write(creds.to_json())
+
+    try:
+        # Call the Gmail API
+        service = build('gmail', 'v1', credentials=creds)
+        results = service.users().labels().list(userId='me').execute()
+        labels = results.get('labels', [])
+
+        if not labels:
+            print('No labels found.')
+            return
+        print('Labels:')
+        for label in labels:
+            print(label['name'])
+
+    except HttpError as error:
+        # TODO(developer) - Handle errors from gmail API.
+        print(f'An error occurred: {error}')
+
+
+if __name__ == '__main__':
+    main()

requirements.txt

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+aiohttp==3.8.5
+aiosignal==1.3.1
+async-timeout==4.0.3
+attrs==23.1.0
+cachetools==5.3.1
+certifi==2023.7.22
+charset-normalizer==3.2.0
+frozenlist==1.4.0
+google-api-core==2.11.1
+google-api-python-client==2.100.0
+google-auth==2.23.0
+google-auth-httplib2==0.1.1
+google-auth-oauthlib==1.1.0
+googleapis-common-protos==1.60.0
+httplib2==0.22.0
+idna==3.4
+multidict==6.0.4
+oauthlib==3.2.2
+openai==0.28.0
+protobuf==4.24.3
+pyasn1==0.5.0
+pyasn1-modules==0.3.0
+pyparsing==3.1.1
+requests==2.31.0
+requests-oauthlib==1.3.1
+rsa==4.9
+tqdm==4.66.1
+uritemplate==4.1.1
+urllib3==1.26.16
+yarl==1.9.2