Added Arduino tutorials under C/C++ topic in README.md (Issue #94)

[lucastosetto]

Description

New topic named "Arduino" was added in C/C++ section of the README.md file with links to Arduino official website tutorials. The tutorials were chosen and organized in a logical sequence in order to provide the opportunity for begginers to have a general contact with the application and from there build more skills.

Motivation and Context

Fix Issue #94 .

How Has This Been Tested?

All the procedures was tested during my trajectory as and Arduino programmer in an Arduino Nano board, a protoboard, a PC running Windows 10 and the Arduino IDE.

Types of changes

• Content Update (change which fixes an issue or updates an already existing submission)
• New Article (change which adds functionality)
• Documentation change

Checklist:

• My code follows the code style of this project.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have made checks to ensure URLs and other resources are valid

[enkeyz]

Arduino should be a subcategory.

[enkeyz]

@its0x08 your approve also a mistake here, Arduino should be a subcategory: take a look at this example:

project-based-learning/README.md

Line 131 in 0d3b4e5

### OpenGL:

[its0x08]

@enkeyz probably you are right..

[enkeyz]

Also, these tutorials are from the offical Arduino website. Closing.