feat: add ccusage.nvim plugin file

Author: S1M0N38

plugin/base.lua

@@ -0,0 +1,25 @@
+-- ccusage.nvim plugin entry point
+-- This file defines user commands for interacting with the plugin
+
+local cli = require("ccusage.cli")
+
+---Display current Claude Code usage status
+---@return nil
+local function status_cmd()
+  local blocks_data = cli.ccusage_blocks()
+  if blocks_data and blocks_data.blocks and #blocks_data.blocks > 0 then
+    vim.print("Current Claude Code usage blocks:")
+    vim.print(vim.inspect(blocks_data))
+  else
+    vim.print("No Claude Code usage data found")
+  end
+end
+
+-- TODO: change the command behavior to notify with usage stats
+vim.api.nvim_create_user_command("CCUsage", status_cmd, {
+  desc = "Show Claude Code usage status",
+})
+
+-- RESOURCES:
+--  - :help lua-guide-commands-create
+--  - https://github.com/nvim-neorocks/nvim-best-practices?tab=readme-ov-file#speaking_head-user-commands