Add SVG animation editor with timeline, tweening and SMIL export

svg-animation-editor.docs.md

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+A full keyframe animation studio for SVG that runs entirely in the browser. Draw rectangles, ellipses, lines, polygons, text and bezier paths (with a pen tool), then animate them: move the playhead, adjust any shape and auto-key records a tween automatically — position, size, rotation, colors, opacity and even the path geometry itself morph smoothly between keyframes. A multi-track timeline shows a row of keyframe diamonds per animated property with per-keyframe easing curves, scrubbing, looping playback and onion skinning. Includes a layers panel with lock/hide/reorder/duplicate, full undo/redo, localStorage autosave, import of existing SVG files (shapes and paths become editable and animatable) and project save/load as JSON. Export produces a self-contained SMIL-animated .svg file — native `<animate>` elements with spline easing that play in any browser with no JavaScript. Keyboard shortcuts throughout (V/A/P/R/O/L/Y/T for tools, space to play, K to keyframe a whole pose).