chore: generator for make new rescript project

@Usage
```console
hygen rescript-lib new --name rescript-new-libs --description "use hygen"
```
@see http://www.hygen.io/docs/generators

Author: r17x

.github/workflows/ci.yml

@@ -7,6 +7,7 @@ on:
       - test
     paths-ignore:
       - "**/*.md"
+      - "_templates"
   pull_request:
     branches:
       - main

.hygen.js

@@ -0,0 +1,18 @@
+const moduleName = (str) => {
+  const [firstName, ...moduleName] = str.toLowerCase().split("-");
+  if (firstName === "rescript") {
+    return moduleName.join("");
+  }
+  return str;
+};
+
+const testModuleName = (str) => `dev__${moduleName(str).toLowerCase()}`;
+
+const helpers = {
+  testModuleName,
+  moduleName,
+};
+
+module.exports = {
+  helpers,
+};

_templates/rescript-lib/.DS_Store

@@ -0,0 +1,14 @@
+---
+to: <%= name %>/bsconfig.json
+---
+{
+  "name": "<%= name %>",
+  "sources": {
+    "dir": "src",
+    "subdirs": true
+  },
+  "package-specs": {
+    "module": "es6",
+    "in-source": true
+  }
+}

_templates/rescript-lib/new/bsconfig.json.ejs.t

@@ -0,0 +1,3 @@
+---
+to: <%= name %>/CHANGELOG.md
+---

_templates/rescript-lib/new/changelog.ejs.t

@@ -0,0 +1,6 @@
+---
+to: examples/dev/<%= h.testModuleName(name) %>.res
+---
+/**
+  Write Test for <%= h.inflection.camelize(h.moduleName(name)) %> 
+**/

_templates/rescript-lib/new/dev.ejs.t

@@ -0,0 +1,4 @@
+---
+to: <%= name %>/src/<%= h.inflection.camelize(h.moduleName(name)) %>.res
+---
+"<%= name %>"->Js.log;

_templates/rescript-lib/new/lib.ejs.t

@@ -0,0 +1,27 @@
+---
+to: <%= name %>/package.json
+---
+{
+  "name": "<%= locals.scope ? `@${scope}/${name}` : name %>",
+  "version": "0.0.0",
+  "description": "<%= locals.description ? description : "" %>",
+  "author": "ri7nz <hi@rin.rocks>",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/ri7nz/rescript-libs.git",
+    "directory": "<%= name %>"
+  },
+  "bugs": "https://github.com/ri7nz/rescript-libs/issues",
+  "scripts": {
+    "start": "rescript build -w",
+    "build": "rescript build -with-deps",
+    "clean": "rescript clean"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "devDependencies": {
+    "rescript": "9.1.1"
+  }
+}

_templates/rescript-lib/new/package.json.ejs.t

@@ -0,0 +1,35 @@
+---
+to: <%= name %>/README.md
+---
+# <%= name %>
+> <%= locals.description ? description : "write description" %>
+
+## Installation
+
+Run the following in your favorit console: 
+```console
+> yarn add <%= locals.scope ? `@${scope}/${name}` : name %>  
+```
+
+**OR**
+
+```console
+> npm install --save <%= locals.scope ? `@${scope}/${name}` : name %> 
+```
+
+Then, add `<%= locals.scope ? `@${scope}/${name}` : name %>` in your `bsconfig.json`:
+```diff
+-- "bs-dependencies": [],
+++ "bs-dependencies": [<%= locals.scope ? `@${scope}/${name}` : name %>],
+```
+
+## Usage
+
+```rescript
+
+```
+
+Or you can check this [**Example: <%= h.testModuleName(name) %>**](https://github.com/ri7nz/rescript-libs/tree/main/examples/dev/<%= h.testModuleName(name) %>.res).
+
+## API
+> (WIP): docs