Implemented workout program and dockerized backend

[kaanguneyli]

Endpoints related to workout program are created (may need revisit in next milestone). Dockerized backend

[cankocakulak]

• is the .env file local or global? (It is changed on my local i needed to change it back)
• it would be better to add the workout_programm html template inside the workout_program view function
• importing views should be done inside individual urls files of the apps, not the fitness_project itself
• After submitting, "{"error": "(1146, \"Table 'fitness_app.exercise_program_app_workout' doesn't exist\")"}" is taken

[kaanguneyli]

• .env is prepared regarding dockerized db
• will do in the next pr
• will do in the next pr
• this is related to lack of migrations