[20306] Add autofill type information documentation (backport #89)

[mergify]

This is an automatic backport of pull request #89 done by Mergify.
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	both modified:   docs/01-figures/participant.png
	both modified:   docs/01-figures/tcp_client_options.png
	both modified:   docs/01-figures/tcp_lan_server_options.png
	both modified:   docs/01-figures/tcp_wan_server_options.png
	both modified:   docs/first_steps/first_steps.rst

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[richiprosima]

Build status:

[richiprosima]

Build status:

[JesusPoderoso]

Mind that some screenshots should be updated

[Mario-DL]

@EduPonz would you mind updating the screenshots ? In particular, I think that the Data-sharing checkbox within same host delivery in the participant configuration dialog did not exist in 2.6.x

[JesusPoderoso]

I think that updating images is no longer required if we merge this PR before

• [20410] Remove Data-Sharing option (backport #100) #102

Do you agree @Mario-DL ?

[Mario-DL]

Alright, yes in that case

[Mario-DL]

LGTM