chore: add changelog for v2.5.1-beta

Author: itsaky

changelogs/v2.5.1-beta.md

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+# AndroidIDE v2.5.1-beta
+
+This patch release addresses various bugs, including critical issues, and introduces some improvements for a smoother user experience.
+
+## Fixes
+
+- Resolved a crash caused by invalid screen states ([#1109](https://github.com/AndroidIDEOfficial/AndroidIDE/issues/1109)).
+- Fixed an `IndexOutOfBoundsException` occurring in `MultiLogSenderHandler` ([#1110](https://github.com/AndroidIDEOfficial/AndroidIDE/issues/1110)).
+
+## Improvements
+
+- Enhanced syntax highlighting for Java and Kotlin languages ([#1051](https://github.com/AndroidIDEOfficial/AndroidIDE/issues/1051)).
+- Custom color schemes now fallback to the default color scheme for screens that do not specify colors for a specific file or type.
+- Updated translations from Crowdin. We extend our gratitude to all the [Crowdin translators](https://github.com/AndroidIDEOfficial/AndroidIDE/blob/dev/CROWDIN_CONTRIBUTORS.md) for their contributions.
+
+Please note that although no significant changes are present in this release, it includes critical bug fixes that enhance the stability and reliability of the application.
+
+We hope you enjoy using AndroidIDE v2.5.1-beta!