feat: Initial commit with basic commands and first functionalities

README.md

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+# jj.nvim
+
+⚠️ **VERY WORK IN PROGRESS - NOT READY FOR MASSIVE USE** ⚠️
+
+A Neovim plugin for [Jujutsu (jj)](https://github.com/jj-vcs/jj) version control system.
+
+## About
+
+This plugin aims to be something like vim-fugitive but for piloting the jj-vcs CLI. The goal is to eventually provide features similar to git status, diffs, and pickers for managing Jujutsu repositories directly from Neovim.
+
+## Current Features
+
+- Basic jj command execution through `:J` command
+- Terminal-based output display for jj commands
+- Support for common jj subcommands:
+  - `describe` - Set change descriptions
+  - `status` / `st` - Show repository status
+  - `log` - Display log history with configurable options
+  - `diff` - Show changes
+  - `new` - Create a new change
+  - `edit` - Edit a change
+  - `squash` - Squash the current diff to it's parent
+
+## Installation
+
+Using [lazy.nvim](https://github.com/folke/lazy.nvim):
+
+```lua
+{
+  "nicolasgb/jj.nvim",
+  config = function()
+    require("jj").setup({})
+  end,
+}
+```
+
+## Usage
+
+The plugin provides a `:J` command that accepts jj subcommands:
+
+```vim
+:J status
+:J log
+:J describe "Your change description"
+:J new
+```
+
+## Requirements
+
+- Neovim >= 0.9.0
+- [Jujutsu](https://github.com/jj-vcs/jj) installed and available in PATH
+
+## Contributing
+
+This is an early-stage project. Contributions are welcome, but please be aware that the API and features are likely to change significantly.
+
+## License
+
+[MIT](License)