docs: add readme for task plugin

lua/custom/task/README.md

@@ -0,0 +1,32 @@
+# Task
+
+A simple plugin for [taskfiles](https://taskfile.dev/)
+
+## Options
+
+```lua
+return {
+  dir = vim.fn.stdpath('config') .. '/lua/custom/task',
+  name = 'custom-task',
+  lazy = false,
+  config = function()
+    require('custom.task').setup({
+      float = {
+        width = 0.7, -- Percentage of the screen width
+        height = 0.7, -- Percentage of the screen height
+        border = 'single', -- Border style
+      },
+      scroll = {
+        auto = true, -- Automatically scroll to the bottom when new output is added
+      },
+      keymaps = {
+        rerun = '<leader>rt' -- Keymap to rerun the last task
+      },
+    })
+  end,
+}
+```
+
+### Commands
+- `:Task` — select and run a task from the Taskfile
+- `:TaskRerun` — rerun the last task