add testing database and chatgpt factories (#28)

* add testing database and chatgpt factories

* include lint job to develop stage

* reformat audioconverter save files to tmp directory

* add api tests

* update README.md

.github/workflows/check-lint.yml

@@ -3,7 +3,7 @@ name: lint
 on:
   push:
     branches-ignore:
-      - develop
+      - stage
     tags-ignore:
       - "*"
   pull_request:

.github/workflows/poetry-test.yml

@@ -3,7 +3,7 @@ name: test
 on:
   push:
     branches-ignore:
-      - develop
+      - stage
     tags-ignore:
       - "*"
   pull_request: