update new documentation and move to doc/

doc/developers-guide/plugin-development/plugin-manager.md

@@ -0,0 +1,24 @@
+---
+title: "Plugin manager"
+slug: "plugin-manager"
+excerpt: "Learn how to add your plugin to the `reckless` plugin manager."
+hidden: false
+createdAt: "2023-02-08T13:22:17.211Z"
+updatedAt: "2023-02-21T15:11:45.714Z"
+---
+`reckless` is a plugin manager for Core Lightning that you can use to install and uninstall [plugins](doc:plugins) with a single command.
+
+To make your plugin compatible with reckless install:
+
+- Choose a unique plugin name.
+- The plugin entrypoint is inferred.  Naming your plugin executable the same as your plugin name will allow reckless to identify it correctly (file extensions are okay).
+- For python plugins, a requirements.txt is the preferred medium for python dependencies. A pyproject.toml will be used as a fallback, but test installation via `pip install -e .` - Poetry looks for additional files in the working directory, whereas with pip, any  
+    references to these will require something like `packages = [{ include = "*.py" }]` under the `[tool.poetry]` section.
+- Additional repository sources may be added with `reckless source add https://my.repo.url/here` however <https://github.com/lightningd/plugins> is included by default. Consider adding your plugin lightningd/plugins to make installation simpler.
+- If your plugin is located in a subdirectory of your repo with a different name than your plugin, it will likely be overlooked.
+
+> 📘 
+> 
+> As reckless needs to know how to handle and install the dependencies of a plugin, current version only supports python plugins. We are working on a broader support, e.g., for javascript, golang and other popular programming languages. 
+> 
+> Stay tuned and tell us what languages you need support for, and what features you're missing.