Update rholangtut-0.3.md to Italian

[ghost]

Issue

Original (English) Content

• rholangtut-0.3.md

Translated (Italian) Content

Tasks

• Download the original (English) content.
• Translate the content.
• Check the spelling.
• Review each other's work.
• Have them reviewed by others with knowledge of English and Italian.
• Create a Pull Request.

Collaborators

• @staff91: 10%
• @akhs13 : 0%
• @Chris-Arv : 0%

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For all issues

[Keep italic labels, replace brackets with answer]

Describe how the building and implementation of this task will benefit the RChain Membership or the RChain blockchain:

More people reading the blog posts in other languages means good marketing.

Estimated Budget of Task: $0
Estimated Timeline Required to Complete the Task: 14 days
Measure of Completion: 10%

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Legal
Task Submitter shall not submit Tasks that will involve RHOC being transacted in any manner that (i) jeopardizes RHOC’s status as a software access token or other relevant and applicable description of the RHOC as an “asset”—not a security— or (2) violates, in any manner, applicable U.S. Securities laws.

For Translators

• Why this document?
  • It's important to translate because ____
  • It's an RChain blog item
  • It's on https://developer.rchain.coop/ that has been endorsed
    for translation by @Jake-Gillberg, @MParlikar, or @KellyatPyrofex
• How can people who do not speak this language be assured of the quality of the translation? (all are required)
  • several reviewers are involved (assign the ticket to them)
  • at least two of them have high proficiency in (the target language)
  • at least two of them have high proficiency in English
  • at least two of them have either
    • significant reputation (e.g. a diploma) at stake; source: Diploma
    • a track record of quality work on rchain bounties: Management of the italian website and social media #645
• What about maintenance? (choose one)
  • the source document is stable; further translation work is not expected
  • [x]our plan to keep the translation up to date is: keep it up to date forever, for $0