feat: pasting image within buffer (#331)

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

after/plugin/avante.lua

@@ -0,0 +1,26 @@
+--- NOTE: We will override vim.paste if img-clip.nvim is available to work with avante.nvim internal logic paste
+
+local Clipboard = require("avante.clipboard")
+local Config = require("avante.config")
+
+if Config.support_paste_image() then
+  vim.paste = (function(overriden)
+    ---@param lines string[]
+    ---@param phase -1|1|2|3
+    return function(lines, phase)
+      local bufnr = vim.api.nvim_get_current_buf()
+      local filetype = vim.api.nvim_get_option_value("filetype", { buf = bufnr })
+      if filetype ~= "AvanteInput" then
+        return overriden(lines, phase)
+      end
+
+      ---@type string
+      local line = lines[1]
+
+      local ok = Clipboard.paste_image(line)
+      if not ok then
+        return overriden(lines, phase)
+      end
+    end
+  end)(vim.paste)
+end