Initial commit: webtrees full diagram chart module

Interactive SVG family tree visualization using ELK (Sugiyama) for
layout and D3 for rendering. Shows ancestors, descendants, and siblings
in a single diagram with orthogonal bus-line connectors.

Features:
- Bidirectional tree traversal (ancestors + descendants + siblings)
- Generation-aligned layout with post-processing Y-snap
- Person cards with photos, names, dates, and hover bio cards
- "More ancestors" indicator for persons with hidden parents
- Pan/zoom navigation
- Docker dev environment

rollup.config.js

@@ -0,0 +1,14 @@
+import resolve from "@rollup/plugin-node-resolve";
+import commonjs from "@rollup/plugin-commonjs";
+import terser from "@rollup/plugin-terser";
+
+export default {
+    input: "resources/js/modules/index.js",
+    output: {
+        file: "resources/js/full-diagram.min.js",
+        format: "iife",
+        name: "FullDiagram",
+        sourcemap: false,
+    },
+    plugins: [resolve(), commonjs(), terser()],
+};