Create feature list about ember-language-server

[lifeart]

PR's after 23/05/2020 should be checked and added here with main bullets

[lifeart]

The Ember Language Server (ELS) is a Language Server Protocol (LSP) implementation for the Ember.js framework. It aims to provide a better development experience by offering advanced code intelligence, autocompletion, diagnostics, and more.

Features of the Ember Language Server:

Autocompletion:

Component names
Component attributes
Helper names
Modifier names
Model properties
Route names
Ember Data store methods
Diagnostics:

Linting for Handlebars templates using ember-template-lint
JavaScript and TypeScript linting using ESLint or TSLint
Definition providers:

Go to definition for components, helpers, modifiers, models, and routes
Definition peek
Code actions:

Quick fixes for common issues detected by ember-template-lint
Refactoring suggestions
Code Lens:

Displays inline information about components, helpers, and routes
Hover providers:

Shows relevant information about components, helpers, modifiers, and more on hover
Workspace symbol search:

Search for components, helpers, modifiers, models, and routes across the entire project
Support for addons:

Includes autocompletion and code intelligence for Ember addons
Support for various file types:

Handlebars templates
JavaScript and TypeScript files
Extensible architecture:

Allows for the addition of custom language features through addons
Integration with popular editors:

Visual Studio Code via the vscode-ember extension
Other editors supporting the Language Server Protocol
These are the main features provided by the Ember Language Server. Keep in mind that some features may require additional setup, and the performance and behavior of these features may vary depending on the editor you're using.