* Add OpenCAPIF 2.0 support in list of releases supported (only in doc, testing to be conducted),
* Update sdk_configuration.md
* Fix authorization typo and update sdk config doc.
* Mistakes fixed related to OpenCAPIF SDK review
* Highlighted missing variables, functions and files,
* Removed AEF Security API support from Known issues, since it is already implemented.

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Co-authored-by: Daniel García <daniel.garciasanchez@telefonica.com>
Co-authored-by: JorgeEcheva26 <jorge.echevarriauribarri.practicas@telefonica.es>

PR:

AEF security implementation within the provider api publication and invoker,
Documentation updated,
Fixed little mistakes related to renaming, loading initial data, etc,
Tests modified,
License Apache 2 for ETSI added.

---------

Co-authored-by: JorgeEcheva26 <jorge.echevarriauribarri.practicas@telefonica.es>
Co-authored-by: Daniel García <daniel.garciasanchez@telefonica.com>

PR:

Data structure definition in code
provider_ids from json to dictionary
Change invoker dictionaries

---------

Co-authored-by: JorgeEcheva26 <jorge.echevarriauribarri.practicas@telefonica.es>
Co-authored-by: Daniel García <daniel.garciasanchez@telefonica.com>

PR:
- Improved documentation,
- Added and improved network-app samples,
- License draft v0.1.

---------

Co-authored-by: JorgeEcheva26 <jorge.echevarriauribarri.practicas@telefonica.es>
Co-authored-by: Daniel García <daniel.garciasanchez@telefonica.com>

* Fix broken links and removed duplicated content from main doc.
* Update ToC

PR:
- Included complete Network App samples,
- Complete developer path description,
- Refactored code structure,
- Complete doc upgrade.

---------

Co-authored-by: JorgeEcheva26 <jorge.echevarriauribarri.practicas@telefonica.es>
Co-authored-by: Daniel García <daniel.garciasanchez@telefonica.com>