add flask WTForms and googletrans package into requirements.txt

requirements.txt

@@ -1,12 +1,25 @@
 certifi==2020.12.5
-chardet==4.0.0
+chardet==3.0.4
 click==7.1.2
+contextvars==2.4
 Flask==1.1.2
+Flask-WTF==0.14.3
+googletrans==3.1.0a0
+h11==0.9.0
+h2==3.2.0
+hpack==3.0.0
+hstspreload==2020.12.22
+httpcore==0.9.1
+httpx==0.13.3
+hyperframe==5.2.0
 idna==2.10
+immutables==0.15
 itsdangerous==1.1.0
 Jinja2==2.11.3
 MarkupSafe==1.1.1
 requests==2.25.1
+rfc3986==1.4.0
+sniffio==1.2.0
 urllib3==1.26.4
 Werkzeug==1.0.1
-flake8==3.9.0
+WTForms==2.3.3