Add Spotless Maven Plugin with Eclipse JDT formatter for AOSP code style

[mdzyuba]

Configuration:

• Added Spotless Maven Plugin version 2.43.0
• Configured Eclipse JDT formatter with AOSP code style
• Added settings/eclipse-aosp-style.xml with AOSP formatting rules
• Import ordering: android, androidx, com.android, dalvik, libcore, com, org, java, javax
• Removes unused imports automatically
• Bound 'check' goal to 'verify' phase

Formatting Rules:

• 4-space indentation
• 100 character line length
• Opening braces on same line
• Preserved line breaks in method chains (join_wrapped_lines = false)
• AOSP import ordering with blank lines between groups

Additional Changes:

• Expanded README.md with build instructions, usage examples, and formatting documentation
• Reformatted Java source files with AOSP style

Verification:

• Ran 'mvn spotless:check' to verify configuration
• Confirmed formatting preserves preferred method chain style

Usage:

• mvn spotless:check - Verify code formatting
• mvn spotless:apply - Auto-format code to match the style

[ByteHamster]

Thanks!