feat: Implement `KnowledgeLevelRepository.update` and `updateBulk`

[apomalyn]

Requirements

Implement in the KnowledgeLevelRepository:

• a method void update(KnowledgeUpdate update) that update a specific knowledge level
• a method void updateBulk(List<KnowledgeUpdate> updates) that update a bulk of knowledge levels

Those methods should:

• retrieve the correct KnowledgeLevel
• update the gap and other necessary information
• save the updated KnowledgeLevel
• update the user streak if necessary
• update the user progression if necessary
• synchronize the user with the API

Update KnowledgeLevel full diagram


Update a single KnowledgeLevel diagram


What needs to be done

Implement in the KnowledgeLevelRepository both update and updateBulk methods following the diagrams

Dependencies

Child of #218

Depends on:

• 231

• 148

Dev notes

• Isar documentation