[Term Entry] Dart Type Conversion .parse()

[Mhidayah19]

Description

• Added Dart Type Conversion .parse()
• Closes #4571

Issue Solved

Type of Change

• Adding a new entry

Checklist

• [x] All writings are my own.
• [x] My entry follows the Codecademy Docs style guide.
• [ ] My changes generate no new warnings.
• [x] I have performed a self-review of my own writing and code.
• [x] I have checked my entry and corrected any misspellings.
• [x] I have made corresponding changes to the documentation if needed.
• [x] I have confirmed my changes are not being pushed from my forked main branch.
• [x] I have confirmed that I'm pushing from a new branch named after the changes I'm making.
• [x] I have linked any issues that are relevant to this PR in the Issues Solved section.

[CLAassistant]

All committers have signed the CLA.

[letsbuildanything]

@Mhidayah19 It's been more than two weeks since the request was made. Please proceed with implementing all the suggested modifications. Thank you!

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