Add import data tutorials to the main tutorials section

[luisaFelixSalles]

Add the import data tutorials

List of tutorials:

• Manual input data on DPF
• Import a result file in DPF
• Extract and explore results metadata
• Extract and explore results data
• Narrow down data

Preview on how it renders

Import data section main page

Manual input data on DPF

Import a result file in DPF

Extract and explore results metadata

Extract and explore results data

Narrow down data

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.98%. Comparing base (97f32dc) to head (2e1c8d9).
Report is 57 commits behind head on doc/new-tutorials-section.

Additional details and impacted files

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##           doc/new-tutorials-section    #1933      +/-   ##
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- Coverage                      88.02%   86.98%   -1.05%     
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  Files                             83       83              
  Lines                           9963     9973      +10     
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- Hits                            8770     8675      -95     
- Misses                          1193     1298     +105     

---- 🚨 Try these New Features:

• Flaky Tests Detection - Detect and resolve failed and flaky tests

[PProfizi]

Suggested change

	.. grid-item-card:: Manual input data on DPF
	.. grid-item-card:: Use custom data

[PProfizi]

Suggested change

	Learn how to represent your manual input data in a DPF data storage structures
	Learn how to build DPF data storage structures from custom data

[PProfizi]

Suggested change

	.. _ref_tutorials_represent_data_on_dpf:
	.. _ref_tutorials_field_with_custom_data:

[PProfizi]

Suggested change

	:link: ref_tutorials_represent_data_on_dpf
	:link: ref_tutorials_field_with_custom_data

[PProfizi]

Suggested change

	========================
	Manual input data on DPF
	========================
	=======================
	Load custom data in DPF
	=======================

[PProfizi]

Suggested change

	This tutorial shows how to represent your manual input data in a DPF data storage structures.
	This tutorial shows how to represent your custom data in DPF data storage structures.

[PProfizi]

Suggested change

	When handling data DPF uses |FieldsContainer| and |Field| to store and return it. The |Field| is a DPF array
	and a collection of |Field| is called |FieldsContainer|. For more information on how the data is structure
	in a |Field| and how the DPF data storage structures works check the :ref:`ref_tutorials_data_structures`
	tutorial section.
	Here we will create some 3d vector |Field|, where the data comes from lists.
	DPF uses |Field| and |FieldsContainer| objects to handle data. The |Field| is a homogeneous array
	and a |FieldsContainer| is a labeled collection of |Field|.
	For more information on DPF data structures such as the |Field| and their use check the :ref:`ref_tutorials_data_structures` tutorials section.
	Here we show how to create a 3d vector |Field| from data stored in Python lists.

We need a part on how to do that with numpy arrays.

[PProfizi]

Suggested change

	To manually import data on DPF you have to create the structure to store it.
	To import custom data into DPF you first have to create the structure to store it.

[PProfizi]

Suggested change

	Defining the fields
	-------------------
	Create DPF fields
	-----------------

[PProfizi]

@luisaFelixSalles I would personally use five sections for this tutorial:

• a first section where we just define the custom data used later
• a second section on how to create a field -> we need to show more here on how to set the proper nature, size and dimensionality. This is crucial to properly set the data later so even if it is already in another tutorial I would still explain the basics here. Also show the field_factory, the fact you can create unitary fields, fields with a given value everywhere, etc. With have helpers so should mention them here.
• a third section where we show how to set data arrays directly, and how to set the scoping for that array
  This is the most important as people rarely only add three data points. There are steps missing in this third section however on setting the data property. The scoping is undefined in this case, so it needs to also be built and set.
• a fourth section where we show how to append data or change data for a specific entity id
• a final section on how to create the fields_container based on the fields as you showed with the helper. Mention the fields_container factory etc, without going into too much detail if there is another tutorial for that. To me this is a last step as not everyone will need to create a collection for the fields.