The second revison

[habedi]

• Added more unit tests (Improve test coverage #1).
• Changed the groupId to io.github.pixelclover.uview from com.uview.
• Revised and improved the main README.md file.
• Fixed lots of bugs.
• Switched to Java 21 from 17.
• Added more Javadoc comments (Add documenation #3).
• Added a Settings menu (Improve the toolbar #6).
• Added a font manager and included open-source fonts from JetBrains in the Uber JAR.

[codecov]

Codecov Report

Attention: Patch coverage is 8.26873% with 355 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...va/io/github/pixelclover/uview/gui/MainWindow.java	0.00%	157 Missing ⚠️
...o/github/pixelclover/uview/gui/PdfViewerPanel.java	0.00%	58 Missing ⚠️
...github/pixelclover/uview/gui/AssetViewerFrame.java	0.00%	37 Missing ⚠️
...github/pixelclover/uview/gui/AudioPlayerPanel.java	0.00%	34 Missing ⚠️
...github/pixelclover/uview/core/SettingsManager.java	58.53%	15 Missing and 2 partials ⚠️
...a/io/github/pixelclover/uview/gui/FontManager.java	0.00%	14 Missing ⚠️
.../io/github/pixelclover/uview/model/UnityAsset.java	38.09%	8 Missing and 5 partials ⚠️
...o/github/pixelclover/uview/gui/tree/TreeEntry.java	0.00%	9 Missing ⚠️
.../github/pixelclover/uview/gui/SyntaxTextPanel.java	0.00%	7 Missing ⚠️
...github/pixelclover/uview/gui/PackageViewPanel.java	0.00%	4 Missing ⚠️
... and 4 more

📢 Thoughts on this report? Let us know!