Chore: Template to generate packages

.github/CODEOWNERS

@@ -2,3 +2,4 @@
 /packages/core-typings/ @RocketChat/chat-engine
 /.vscode/ @RocketChat/chat-engine
 /.github/ @RocketChat/chat-engine
+/_templates/ @RocketChat/chat-engine

_templates/generator/help/index.ejs.t

@@ -0,0 +1,5 @@
+---
+message: |
+  hygen {bold generator new} --name [NAME] --action [ACTION]
+  hygen {bold generator with-prompt} --name [NAME] --action [ACTION]
+---

_templates/generator/new/hello.ejs.t

@@ -0,0 +1,18 @@
+---
+to: _templates/<%= name %>/<%= action || 'new' %>/hello.ejs.t
+---
+---
+to: app/hello.js
+---
+const hello = ```
+Hello!
+This is your first hygen template.
+
+Learn what it can do here:
+
+https://github.com/jondot/hygen
+```
+
+console.log(hello)
+
+

_templates/generator/with-prompt/hello.ejs.t

@@ -0,0 +1,18 @@
+---
+to: _templates/<%= name %>/<%= action || 'new' %>/hello.ejs.t
+---
+---
+to: app/hello.js
+---
+const hello = ```
+Hello!
+This is your first prompt based hygen template.
+
+Learn what it can do here:
+
+https://github.com/jondot/hygen
+```
+
+console.log(hello)
+
+

_templates/generator/with-prompt/prompt.ejs.t

@@ -0,0 +1,14 @@
+---
+to: _templates/<%= name %>/<%= action || 'new' %>/prompt.js
+---
+
+// see types of prompts:
+// https://github.com/enquirer/enquirer/tree/master/examples
+//
+module.exports = [
+  {
+    type: 'input',
+    name: 'message',
+    message: "What's your message?"
+  }
+]

_templates/init/repo/new-repo.ejs.t

@@ -0,0 +1,4 @@
+---
+setup: <%= name %>
+force: true # this is because mostly, people init into existing folders is safe
+---

_templates/package/new/index.ejs.t

@@ -0,0 +1,4 @@
+---
+to: packages/<%= name %>/src/index.ts
+---
+export default () => "<%= h.capitalize(name) %>";

_templates/package/new/package.json.ejs.t

@@ -0,0 +1,29 @@
+---
+to: packages/<%= name %>/package.json
+---
+
+{
+	"name": "@rocket.chat/<%= name.toLowerCase() %>",
+	"version": "0.0.1",
+	"private": true,
+	"devDependencies": {
+		"@types/jest": "^27.4.1",
+		"eslint": "^8.12.0",
+		"jest": "^27.5.1",
+		"ts-jest": "^27.1.4",
+		"typescript": "~4.3.5"
+	},
+	"scripts": {
+		"eslint": "eslint --ext .js,.jsx,.ts,.tsx .",
+		"eslint:fix": "eslint --ext .js,.jsx,.ts,.tsx . --fix",
+		"jest": "jest",
+		"build": "tsc -p tsconfig.json"
+	},
+	"main": "./dist/index.js",
+	"typings": "./dist/index.d.ts",
+	"files": [
+		"/dist"
+	],
+	"dependencies": {
+	}
+}

_templates/package/new/tsconfig.json.ejs.t

@@ -0,0 +1,11 @@
+---
+to: packages/<%= name %>/tsconfig.json
+---
+{
+	"extends": "../../tsconfig.base.json",
+	"compilerOptions": {
+		"rootDir": "./src",
+		"outDir": "./dist"
+	},
+	"include": ["./src/**/*"]
+}