CH-45 Update django main file template to handle both auth header and cookie

[condar-metacell]

Closes CH-45

Updated django main template to handle both auth header and auth cookie as well as fix some linting issues

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Use harness-application to create a new django application and run genapi.sh inside the created api folder

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Sanity checks:

• [x] The pull request is explicitly linked to the relevant issue(s)
• [x] The issue is well described: clearly states the problem and the general proposed solution(s)
• [x] In this PR it is explicitly stated how to test the current change
• [x] The labels in the issue set the scope and the type of issue (bug, feature, etc.)
• [x] The relevant components are indicated in the issue (if any)
• [ ] All the automated test checks are passing
• [x] All the linked issues are included in one Sprint
• [x] All the linked issues are in the Review state
• [ ] All the linked issues are assigned

Breaking changes (select one):

• [x] The present changes do not change the preexisting api in any way
• [ ] This PR and the issue are tagged as a breaking-change and the migration procedure is well described above

Possible deployment updates issues (select one):

• [x] There is no reason why deployments based on CloudHarness may break after the current update
• [ ] This PR and the issue are tagged as alert:deployment

Test coverage (select one):

• [ ] Tests for the relevant cases are included in this pr
• [x] The changes included in this pr are out of the current test coverage scope

Documentation (select one):

• [ ] The documentation has been updated to match the current changes
• [x] The changes included in this PR are out of the current documentation scope

Nice to have (if relevant):

• [ ] Screenshots of the changes
• [ ] Explanatory video/animated gif