work on docs, tests and some fix

mock/mock_app/handlers/handlers_implementation/solving_command.py

@@ -1,20 +0,0 @@
-from rich.console import Console
-from ...business_logic.word2num_math import word2num_math
-
-
-console = Console()
-print_line_separator = lambda: console.print('\n[bold blue]--------------------------------------[/bold blue]\n')
-
-
-def start_solving_command():
-    while True:
-        console.print(
-            "\n[italic]Enter a string expression or [bold italic green] Q [/bold italic green] for exit:[/italic]")
-        string_expression = input()
-        if string_expression.lower() == 'q':
-            break
-        else:
-            print_line_separator()
-            console.print(
-                f'[bold green]Answer:[/bold green]  [bold blue]{word2num_math(string_expression)}[/bold blue]')
-            print_line_separator()

mock/mock_app/handlers/handlers_implementation/upgrade_command.py

@@ -1,26 +0,0 @@
-import requests
-from rich.console import Console
-from ...business_logic.script_updater import UpdateScript
-
-
-console = Console()
-print_line_separator = lambda: console.print('\n[bold green]--------------------------------------[/bold green]\n')
-
-
-def upgrade_command():
-    try:
-        requests.get('https://ya.ru')
-    except requests.exceptions.ConnectionError:
-        console.print('[bold red]No internet connection[/bold red]')
-    else:
-        latest_tag = UpdateScript.start_update()
-        if latest_tag:
-            print_line_separator()
-            console.print(f"[bold yellow]The newest version ({latest_tag}) of the script has been successfully installed![/bold yellow]")
-            print_line_separator()
-            console.print("[bold yellow]Rerun the script for the changes to take effect[/bold yellow]")
-            print_line_separator()
-            exit(0)
-        else:
-            console.print('[bold red]You have the latest version installed[/bold red]')
-