add template + document framework in root README

template/README.md: stripped to a one-liner bootstrap command.
README.md: full project docs (structure, add page, add component, build.sh).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: GnomeZworc <nicolas.boufidjeline@g3e.fr>

template/sources/core/registry.js

@@ -0,0 +1,8 @@
+const response = await fetch('./components.json')
+if (!response.ok) throw new Error('Failed to load components.json')
+
+const components = await response.json()
+
+for (const path of components) {
+  await import(`../${path}`)
+}