Add missing Xdebug handler dependency

[savinmikhail]

Summary

• add composer/xdebug-handler as a runtime dependency to satisfy the CLI bootstrap

Testing

• composer validate

[savinmikhail]

see #12

[savinmikhail]

now it's working:

❯
composer require savinmikhail/dist-size-optimizer
./vendor/bin/dist-size-optimizer
The package you required is recommended to be placed in require-dev (because it is tagged as "static analysis") but you did not use --dev.
Do you want to re-run the command with --dev? [yes]?
./composer.json has been created
Running composer update savinmikhail/dist-size-optimizer
Loading composer repositories with package information
Updating dependencies
Lock file operations: 14 installs, 0 updates, 0 removals
  - Locking composer/pcre (3.3.2)
  - Locking composer/xdebug-handler (3.0.5)
  - Locking psr/container (2.0.2)
  - Locking psr/log (3.0.2)
  - Locking savinmikhail/dist-size-optimizer (v0.2.7)
  - Locking symfony/console (v7.4.3)
  - Locking symfony/deprecation-contracts (v3.6.0)
  - Locking symfony/finder (v7.4.3)
  - Locking symfony/polyfill-ctype (v1.33.0)
  - Locking symfony/polyfill-intl-grapheme (v1.33.0)
  - Locking symfony/polyfill-intl-normalizer (v1.33.0)
  - Locking symfony/polyfill-mbstring (v1.33.0)
  - Locking symfony/service-contracts (v3.6.1)
  - Locking symfony/string (v8.0.1)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 3 installs, 1 update, 0 removals
  - Downloading savinmikhail/dist-size-optimizer (v0.2.7)
  - Installing composer/pcre (3.3.2): Extracting archive
  - Installing psr/log (3.0.2): Extracting archive
  - Installing composer/xdebug-handler (3.0.5): Extracting archive
  - Upgrading savinmikhail/dist-size-optimizer (v0.2.6 => v0.2.7): Extracting archive
Generating autoload files
11 packages you are using are looking for funding.
Use the `composer fund` command to find out more!
No security vulnerability advisories found.
Using version ^0.2.7 for savinmikhail/dist-size-optimizer
Console Tool

Usage:
  command [options] [arguments]

Options:
  -h, --help            Display help for the given command. When no command is given display help for the list command
      --silent          Do not output any message
  -q, --quiet           Only errors are displayed. All other output is suppressed
  -V, --version         Display this application version
      --ansi|--no-ansi  Force (or disable --no-ansi) ANSI output
  -n, --no-interaction  Do not ask any interactive question
  -v|vv|vvv, --verbose  Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug

Available commands:
  check       Check which files and folders are not excluded via export-ignore
  completion  Dump the shell completion script
  help        Display help for a command
  list        List commands

~ ❯