Initial release: Go Jdenticon library v0.1.0

- Core library with SVG and PNG generation
- CLI tool with generate and batch commands
- Cross-platform path handling for Windows compatibility
- Comprehensive test suite with integration tests

reference/example1_at_gmail_com_128.svg

@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="128" height="128" viewBox="0 0 128 128"><path fill="#545454" d="M64 37L37 37L37 23.5ZM64 37L64 10L77.5 10ZM64 91L91 91L91 104.5ZM64 91L64 118L50.5 118ZM37 64L10 64L10 50.5ZM91 64L91 37L104.5 37ZM91 64L118 64L118 77.5ZM37 64L37 91L23.5 91Z"/><path fill="#e8caba" d="M14.5 23.5a9,9 0 1,1 18,0a9,9 0 1,1 -18,0M95.5 23.5a9,9 0 1,1 18,0a9,9 0 1,1 -18,0M95.5 104.5a9,9 0 1,1 18,0a9,9 0 1,1 -18,0M14.5 104.5a9,9 0 1,1 18,0a9,9 0 1,1 -18,0"/><path fill="#d19575" d="M64 50.5L64 64L50.5 64ZM77.5 64L64 64L64 50.5ZM64 77.5L64 64L77.5 64ZM50.5 64L64 64L64 77.5Z"/></svg>

reference/example2_at_yahoo_com_128.svg

@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" width="128" height="128" viewBox="0 0 128 128"><path fill="#a83892" d="M64 10L64 37L50.5 37ZM91 37L64 37L64 23.5ZM64 118L64 91L77.5 91ZM37 91L64 91L64 104.5ZM37 37L37 64L23.5 64ZM118 64L91 64L91 50.5ZM91 91L91 64L104.5 64ZM10 64L37 64L37 77.5Z"/><path fill="#d175bf" d="M37 10L37 37L23.5 37ZM118 37L91 37L91 23.5ZM91 118L91 91L104.5 91ZM10 91L37 91L37 104.5ZM37 37L64 37L64 64L37 64ZM46 61L61 61L61 46L46 46ZM91 37L91 64L64 64L64 37ZM67 46L67 61L82 61L82 46ZM91 91L64 91L64 64L91 64ZM82 67L67 67L67 82L82 82ZM37 91L37 64L64 64L64 91ZM61 82L61 67L46 67L46 82Z"/></svg>