feat: Add checklists models and populate

[lsetiawan]

This pull request introduces several new models and updates existing ones in the support_sphere project to improve the structure and functionality of checklists. The most significant changes include the addition of the Priority enum, the creation of new models like Checklist, ChecklistStep, and Frequency, and the removal of deprecated models.

New Models and Enums:

• Added Priority enum to represent different priority levels for checklists (LOW, MEDIUM, HIGH). ([src/support_sphere_py/src/support_sphere/models/enums/priority.pyR1-R11](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-59185b973de38181884faf346268fa1ec2a2ab160d04bafe6f9f80fd41f2c11cR1-R11))
• Added Checklist model to represent a checklist entity, including attributes like id, title, description, priority, and relationships with Frequency and UserChecklists. ([src/support_sphere_py/src/support_sphere/models/public/checklist.pyR1-R51](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-f6520240393b42aca39ba8d41f21c281311f2e3bfe5ceda8c9a970d0db077e99R1-R51))
• Added Frequency model to represent the frequency of checklist recurrences, with attributes like id, name, and num_days. ([src/support_sphere_py/src/support_sphere/models/public/frequency.pyR1-R29](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-1541aef48b949208a66eb40d2f7dabf01c25102a6adc2dd46f3be31811af5291R1-R29))
• Added ChecklistStepsState model to track the state of checklist steps for users, including attributes like id, checklist_steps_order_id, user_profile_id, and is_completed. ([src/support_sphere_py/src/support_sphere/models/public/checklist_steps_state.pyR1-R32](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-e88ff0de75614461e4850b5d9bb85f1b6872d666113db244f5538f1d6d657b79R1-R32))

Updated Models:

• Renamed ChecklistStepsTemplate to ChecklistStep and updated its attributes and relationships to better reflect its purpose. ([src/support_sphere_py/src/support_sphere/models/public/checklist_step.pyR3-R9](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-3a6812571549045ddf213bff59c370adaf685b172dd2da5a7a4b51a104db62c9R3-R9))
• Updated ChecklistStepsOrder model to include new attributes and relationships, such as checklist_id, checklist_step_id, and priority. ([src/support_sphere_py/src/support_sphere/models/public/checklist_steps_order.pyL31-R42](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-479946ad6ea1e1f9088069ebe8d0e7a5d24ba4385d12eb180fe75f5f2e939d3eL31-R42))
• Modified UserChecklist model to UserChecklists, updating its attributes and relationships to align with the new Checklist model. ([src/support_sphere_py/src/support_sphere/models/public/user_checklist.pyL9-R9](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-4b0a4c7a4c3ece2a992ffd128e01c10c15d35144c4bd9db175e2752e70750ccfL9-R9))

Removed Deprecated Models:

• Removed ChecklistType, RecurringType, and UserChecklistState models as they are no longer needed with the new structure. ([[1]](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-a8cd6569fad45cfd701058aa570a06c250419aa6d917170048640dc4b1b1d92bL1-L49), [[2]](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-278d96ce6fe4205c0840c0b6ede21e8e17ada00a0e4d8dea62da86efa71f19f1L1-L29), [[3]](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-e3ab9e10ac61625d5daec471db4f72263e130bdaea9858b064a20620f84d3360L1-L33))

Import and Export Updates:

• Updated import statements and __all__ lists in several __init__.py files to reflect the new and updated models. ([[1]](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-c3f2e0b8fe4389309c711dc7bfd8632b124a9152759ae978db65df9ac914c0adR4-R7), [[2]](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-2fd7615f1a2aa0dcf722cc23576a73dfd71ba3f0009a670526f6303ab10e8ef6L2-L39), [[3]](https://github.com/uw-ssec/post-disaster-comms/pull/182/files#diff-2fd7615f1a2aa0dcf722cc23576a73dfd71ba3f0009a670526f6303ab10e8ef6L48-R52))

Related issues

• feat: Update backend with new checklist schema #178
• feat: Sample checklist created & populated when the database starts #139

TODO:

• Go through docstrings to make sure it's accurate

[github-actions]

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[nikiburggraf]

LGTM