fix(engine): fix reorder warning for m_watch_config_files / m_rule_matching

[LucaGuerra]

What type of PR is this?

Uncomment one (or more) /kind <> lines:

/kind cleanup
/area engine

What this PR does / why we need it:

fixes the following warning (or error when built with -Werror):

/home/ubuntu/dev/falcosecurity/falco/userspace/falco/configuration.h: In constructor ‘falco_configuration::falco_configuration()’:
/home/ubuntu/dev/falcosecurity/falco/userspace/falco/configuration.h:73:14: error: ‘falco_configuration::m_watch_config_files’ will be initialized after [-Werror=reorder]
   73 |         bool m_watch_config_files;                                                                             
      |              ^~~~~~~~~~~~~~~~~~~~                                                                              
/home/ubuntu/dev/falcosecurity/falco/userspace/falco/configuration.h:71:37: error:   ‘falco_common::rule_matching falco_configuration::m_rule_matching’ [-Werror=reorder]
   71 |         falco_common::rule_matching m_rule_matching;
      |                                     ^~~~~~~~~~~~~~~                                                            
/home/ubuntu/dev/falcosecurity/falco/userspace/falco/configuration.cpp:34:1: error:   when initialized here [-Werror=reorder]
   34 | falco_configuration::falco_configuration():                                                                    
      | ^~~~~~~~~~~~~~~~~~~           

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

[LucaGuerra]

/milestone 0.36.0

[poiana]

@LucaGuerra: You must be a member of the falcosecurity/falco-maintainers GitHub team to set the milestone. If you believe you should be able to issue the /milestone command, please contact your maintainers of falcosecurity/falco and have them propose you as an additional delegate for this responsibility.

In response to this:

/milestone 0.36.0

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[jasondellaluce]

/approve

[poiana]

LGTM label has been added.

Git tree hash: 6cf22eea45a7ba6c449e2ee4b2bae3bf92c79132

[LucaGuerra]

/milestone 0.36.0

[Andreagit97]

/approve

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Andreagit97, jasondellaluce, LucaGuerra

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