Show help items in order of definition, not alphabetically

[tiangolo]

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Issue Content

Show help items in order of definition, not alphabetically

For example:

import typer

app = typer.Typer()


@app.command()
def first(word: str | None = None):
    """
    First declared command should show up first.
    """
    print(f"first {word}")


@app.command()
def after(word: str | None = None):
    """
    Last declared command should show up last, not alphabetically.
    """
    print(f"after {word}")

This is the current output:

$ typer demo.py run --help
                                                                            
 Usage: typer [PATH_OR_MODULE] run [OPTIONS] COMMAND [ARGS]...              
                                                                            
 Run the provided Typer app.                                                
                                                                            
╭─ Options ────────────────────────────────────────────────────────────────╮
│ --help          Show this message and exit.                              │
╰──────────────────────────────────────────────────────────────────────────╯
╭─ Commands ───────────────────────────────────────────────────────────────╮
│ after   Last declared command should show up last, not alphabetically.   │
│ first   First declared command should show up first.                     │
╰──────────────────────────────────────────────────────────────────────────╯

This is the ideal output:

$ typer demo.py run --help
                                                                            
 Usage: typer [PATH_OR_MODULE] run [OPTIONS] COMMAND [ARGS]...              
                                                                            
 Run the provided Typer app.                                                
                                                                            
╭─ Options ────────────────────────────────────────────────────────────────╮
│ --help          Show this message and exit.                              │
╰──────────────────────────────────────────────────────────────────────────╯
╭─ Commands ───────────────────────────────────────────────────────────────╮
│ first   First declared command should show up first.                     │
│ after   Last declared command should show up last, not alphabetically.   │
╰──────────────────────────────────────────────────────────────────────────╯