lint: Rule for openInputStreamSafe

[Nishthajain7]

Purpose / Description

Add a new Lint rule (OpenInputStreamSafeDetector) that enforces the use of openInputStreamSafe().

Fixes

• Fixes #19663

Approach

Reports the UnsafeOpenInputStream issue and provides a quick-fix to replace the call with openInputStreamSafe().

How Has This Been Tested?

Added unit tests for the same

Checklist

Please, go through these checks before submitting the PR.

• [x] You have a descriptive commit message with a short title (first line, max 50 chars).
• [x] You have commented your code, particularly in hard-to-understand areas
• [x] You have performed a self-review of your own code
• [x] UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• [x] UI Changes: You have tested your change using the Google Accessibility Scanner

[welcome[bot]]

First PR! 🚀 We sincerely appreciate that you have taken the time to propose a change to AnkiDroid! Please have patience with us as we are all volunteers - we will get to this as soon as possible.

[david-allison]

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