refactor: Rename Ai Assist to Ai Assisted Code Suggestions

refactor: Rename Ai Assist to Ai Assisted Code Suggestions

More descriptive and no confusion with suggested changes. This is a breaking change - for the alpha feature. We shall need to update the videos and communicate with the alpha users.

Main issue: https://gitlab.com/gitlab-org/modelops/applied-ml/ai-assist/ai-assist-api/-/issues/10+

Screenshots

Before	After

Manual test

Code suggestions works fine in VsCode development mode

console.log("Hello");


// create a react functional component
var HelloWorld = React.createClass({
  render: function () {
    return (
      <div>
        <h1></h1>