Sorting tasks

**Is your feature request related to a problem? Please describe.**
Currently, it is hard to view the tasks in a ordered/organized way.

**Describe the solution you'd like**
Sorting the tasks of a certain board. For example, `tb --sort board1` will sort the tasks of board1 by their string values.

Another way to do it would be changing the default view of a board. Some examples would be
- To view board1 tasks sorted by string value: `tb --view board1 sorted`
- To view board2 tasks sorted by their priority: `tb --view board2 priority`
- To view board3 tasks sorted by their deadline: `tb --view board3 deadline`

Start by inspecting the CLI entry point responsible for displaying a board and determining task order. Compare the proposed `tb --sort board1` behavior with the alternative `tb --view board1 sorted` approach, including priority and deadline ordering. Done means a board can be displayed in the selected order and the chosen command behavior is covered by tests.

Written by the indexing model from the issue text.