how to copy paste on vscode vim in insert mode
//This disables VIM controls for Ctrl+C and Ctrl+V, and allows VS Code
//controls(i.e. normal copy(ctrl+c)/paste(ctrl+v)) to take over.
In VS Code settings.json file, do:
"vim.handleKeys": {
"<C-c>": false,
"<C-v>": false
}