Vendor Cordis framework packages as source

cordis 4.0.0-rc.6, plugin-loader, -include, -group, -timer, -hmr,
-logger-console, cosmokit 1.8.1, schemastery 3.18.0 — copied from the
cordis-workspace checkout, flattened under vendor/, original npm names,
private: true. vendor/README.md is the manifest: upstream repos +
commit SHAs, local-modification log, sync procedure.

Local modification: hmr's locale YAML imports and .i18n() call removed
(avoids a runtime YAML import hook we don't vendor).

vendor/include/README.md

@@ -0,0 +1,43 @@
+# @cordisjs/plugin-include
+
+File-backed loader tree for Cordis. The include plugin reads a YAML or JSON
+file, turns it into loader entries, and writes updates back when the file is
+writable.
+
+## Usage
+
+```ts
+import { Context } from 'cordis'
+import Loader from '@cordisjs/plugin-loader'
+import Include from '@cordisjs/plugin-include'
+
+const root = new Context()
+await root.plugin(Loader, { baseUrl: import.meta.url })
+await root.plugin(Include, {
+  path: './cordis.yml',
+  initial: [],
+  enableLogs: true,
+})
+```
+
+Example `cordis.yml`:
+
+```yaml
+- id: timer
+  name: '@cordisjs/plugin-timer'
+- id: app
+  name: ./plugins/app
+  config:
+    message: hello
+```
+
+## Config
+
+| Field | Description |
+| --- | --- |
+| `path` | YAML or JSON file path resolved from `ctx.baseUrl`. |
+| `initial` | Entry list written when the file is missing. |
+| `patches` | Runtime patches applied after reading the file. |
+| `enableLogs` | Enables loader apply, reload, and unload logs. |
+
+Patches can insert entries or override fields on entries with a matching `id`.