Extend "Add new agent" component

[pablotr9]

The new component where we are explaining to the user how to register agents and we are providing a "copy & paste" dynamic snippet is cool, however, it should be used in more places of the Wazuh app.

Proposals:

• If the app has API entries and the API tells us there are no agents, show the component to the user, for example in Overview.
• Make it accessible from more place with light buttons/icons so the user can launch the component almost everywhere.

[pablotr9]

Update
The "Add new agent" component has been updated with the following features:

• Autocomplete Manager IP address with the selected API of the user e728d64
• Show Password field and add it to the generated deployment command 235ab56
• The password field will be only shown if needed 76ce2b6

[pablotr9]

Update
The "Add new agent" component" can now be accessed from other sections:

• Overview general 924af6a: A warning message have been added so the user can access the guide from this section:
  
• Management -> Groups a2f3f76 : It has also been added to the Group tab, as there is no sense managing groups when there are no registered agents: