Create metadata (#133)

* Added migration for metadata table used to store a song's metadata

* Added comment for new table

* Added endpoint to create metadata

* Filling out code

* Changed type of duration in request

* Reorganizing code

* Changing metadata table to song

* Added TODO for data type discrepancy for the future

* Fix migration syntax error

* Added types to request

* Added environment variable for root directory:

* Moving keys to its own module

* Moved environement related code to its own module

* Added function to get root_directory

* Added endpoint to create song

* Minor fixes

* Added test and refactored tests

* Ironing out some kinks

* Resolved test issue

Turns out I was using the wrong id value

* Added env variable in workflow

* Added TODO

* Updated env variable

* clippy warning fixes

* Making sure date_created is populated when returneD

* Code cleanup

* Added TODOs

* Uncommenting tests

* Code formatting

.github/workflows/workflow.yml

@@ -66,6 +66,7 @@ jobs:
     
     - name: Run tests
       env:
+        ROOT_DIRECTORY: "/tmp"
         DATABASE_URL: "postgres://${{ secrets.POSTGRES_USER }}:${{ secrets.POSTGRES_PASSWORD }}@localhost:5432/${{ secrets.POSTGRES_DB }}"
       run: cargo test --verbose