[WIP] PR: Add command line option to connect to an existing kernel at startup (IPython console)

[Social-Mean]

Description of Changes

• Wrote at least one-line docstrings (for any new functions)
• Added unit test(s) covering the changes (if testable)

• Included a screenshot or animation (if affecting the UI, see Licecap)

Issue(s) Resolved

Fixes #23130

Affirmation

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I affirm the Developer Certificate of Origin
with respect to all commits and content included in this PR,
and understand I am releasing the same under Spyder's MIT (Expat) license.

I certify the above statement is true and correct: Social-Mean

[ccordoba12]

Thanks @Social-Mean for your work on this!

[ccordoba12]

This needs to be self.create_client_for_kernel(connection_file, give_focus=False) to give focus to the Editor and not the console at startup.

So, you need to improve that method to make it possible. For that:

• Please add the give_focus kwarg to create_client_for_kernel.

• Pass it to the main widget method here:

  spyder/spyder/plugins/ipythonconsole/plugin.py

  Lines 749 to 751 in 210faf0

  	return self.get_widget().create_client_for_kernel(
  	connection_file, hostname, sshkey, password, server_id, can_close
  	)

• Add give_focus as a kwarg to the widget method too:

  spyder/spyder/plugins/ipythonconsole/widgets/main_widget.py

  Lines 1726 to 1727 in 210faf0

  	def create_client_for_kernel(self, connection_file, hostname, sshkey,
  	password, server_id=None, can_close=True):

• Pass give_focus to the ClientWidget constructor:

  spyder/spyder/plugins/ipythonconsole/widgets/main_widget.py

  Lines 1765 to 1774 in 210faf0

  	client = ClientWidget(
  	self,
  	id_=client_id,
  	given_name=given_name,
  	config_options=self.config_options(),
  	additional_options=self.additional_options(),
  	handlers=self.registered_spyder_kernel_handlers,
  	server_id=server_id,
  	can_close=can_close,
  	)