feat: Add full Italian translations (#1144)

## Summary

* **What is the goal of this PR?** Implements the Italian language
translation for CrossPoint Reader.
* **What changes are included?**
* Added [lib/I18n/translations/italian.yaml] with Italian translations
for all strings.
* Generated the necessary C++ files by running the [gen_i18n.py] script.
* Added myself to the [docs/translators.md] file under the Italian
section.

## Additional Context

---

### AI Usage

While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.

Did you use AI tools to help write this code? _**< PARTIALLY >**_

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Co-authored-by: Zach Nelson <zach@zdnelson.com>

lib/I18n/I18nStrings.h

@@ -19,5 +19,6 @@ extern const char* const STRINGS_RO[];
 extern const char* const STRINGS_CA[];
 extern const char* const STRINGS_UK[];
 extern const char* const STRINGS_BE[];
+extern const char* const STRINGS_IT[];
 
 }  // namespace i18n_strings