This adds a new `escape_args` option to `tty::Options` on Windows, which
can be used to automatically escape all arguments passed to the shell.

While useful to automatically make most arguments work on Windows, there
are some scenarios where it is not possible for users to properly
specify arguments with this option enabled (e.g.: `cmd /c`). An option
should always be present to disable this option when used.

The implementation is based on the `Command` code in Rust's STD lib.

Also apply clippy changes while at it.

Closes #8002.

On macOS every shell is a login shell, which will always print
information about the last login when the terminal is started. The macOS
standard for disabling this is to place a `.hushlogin` file in the
user's home directory, but this did not work with Alacritty since
`login` only looks for this file in the current directory.

To ensure the login message is properly suppressed, Alacritty's default
shell will now check for the presence of the `.hushlogin` file in the
user's home directory and append `-q` to the `login` arguments if it is
present, which will behave as if a `.hushlogin` file was found by
`login`.

Co-authored-by: Thomas <thomas@zed.dev>
Co-authored-by: Anthony <anthony@zed.dev>

Use the `std::env::set_current_dir` from the `pre_exec` and ignore
error, since not changing working directory is a side effect which
shouldn't break spawning a program or block window creation.

Signed-off-by: Tycho Andersen <tycho@tycho.pizza>
Co-authored-by: Kirill Chibisov <contact@kchibisov.com>
Co-authored-by: Christian Duerr <contact@christianduerr.com>

This patch removes the `hold` option on `alacritty_terminal` in favor of
a `drain_on_exit` option, which will drain the PTY before shutdown. The
hold logic is instead handled in `alacritty`.

This patch applies all major and minor version bumps, with the exception
of `unicode-width` since it will need to be handled separately for
Unicode version 16.

This will prevent issues when `setup_env` from `alacritty_terminal` will
remove potentially useful variables for users of the library.

Fixes #8202.

Some users struggle with TOML, since root options must always be at the
top of the file, since they're otherwise associated with the last table.

To avoid misunderstandings, all root-level fields have been removed. A
new `general` section was added to allow housing configuration options
that do not fit into any more specific groups.

Closes #7906.