add workflow dispatch triggers

.github/workflows/test-and-lint.yml

@@ -13,6 +13,7 @@ on:
       - requirements*.txt
       - "**.py"
       - setup.py
+  workflow_dispatch:
 
 env:
   TESTING: 1

.github/workflows/test-pip-install.yml

@@ -11,6 +11,7 @@ on:
       - .github/workflows/test-pip-intall.yml
       - requirements*.txt
       - setup.py
+  workflow_dispatch:
 
 jobs:
   test_pip_install:
@@ -54,4 +55,4 @@ jobs:
           pip install -U pip
           pip install -r requirements.txt
           pip install -r requirements-dev.txt
-           
+