Tauri commands error handling

[TheBestTvarynka]

Currently, our codebase contains a lot of .unwrap and .expect, especially those related to the Tauri commands and their handlers. We must refactor and replace it with proper error handling, logging, and user reporting.
For example:

• Dataans/dataans/src-tauri/src/dataans/note.rs

  Line 20 in ab5d3e2

  .expect("Space notes querying should not fail")

• Dataans/dataans/src-tauri/src/dataans/note.rs

  Line 33 in ab5d3e2

  collection.insert_one(note).expect("Note insertion should not fail");