chore(init): gated neovim version (#67)

Signed-off-by: Aaron Pham <contact@aarnphm.xyz>

README.md

@@ -51,6 +51,10 @@ Install `avante.nvim` using [lazy.nvim](https://github.com/folke/lazy.nvim):
 }
 ```
 
+> [!IMPORTANT]
+>
+> `avante.nvim` is currently only compatible with Neovim 0.10.0 or later. Please ensure that your Neovim version meets these requirements before proceeding.
+
 > [!IMPORTANT]
 >
 > If your neovim doesn't use LuaJIT, then change `build` to `make lua51`. By default running make will install luajit.

lua/avante/init.lua

@@ -185,6 +185,16 @@ end
 
 ---@param opts? avante.Config
 function M.setup(opts)
+  if vim.fn.has("nvim-0.10") == 0 then
+    vim.api.nvim_echo({
+      { "Avante requires at least nvim-0.10", "ErrorMsg" },
+      { "Please upgrade your neovim version", "WarningMsg" },
+      { "Press any key to exit", "ErrorMsg" },
+    }, true, {})
+    vim.fn.getchar()
+    vim.cmd([[quit]])
+  end
+
   ---PERF: we can still allow running require("avante").setup() multiple times to override config if users wish to
   ---but most of the other functionality will only be called once from lazy.nvim
   Config.setup(opts)