Initial commit

This adds the README.md, .gitignore and the basics of the API client
like the entrypoint HypernodeClient class and its factory. This also
includes the first feature: updating one or more settings for a
Hypernode and querying/polling the logbook for a log to be completed.

Author: tdgroot

.gitignore

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+
+vendor

README.md

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+# Hypernode API PHP Client
+
+_**Please note: this project is still in its early stages and the API may be subject to change.**_
+
+## Installation
+
+```bash
+composer require hypernode/api-client
+```
+
+The API client is HTTP client agnostic, which means that it's compatible with
+any HTTP client implementing [PSR-18 interface](https://www.php-fig.org/psr/psr-18/).
+
+Popular HTTP client implementations are: [Guzzle](https://packagist.org/packages/guzzlehttp/guzzle) and [Symfony HTTP Client](https://packagist.org/packages/symfony/http-client).
+
+A full list of implementations, can be [found here](https://packagist.org/providers/psr/http-client-implementation).
+
+## Usage
+
+### Acquiring an API token
+
+An API token can be requested at support@hypernode.com.
+
+### Using the client
+
+``` php
+use Hypernode\Api\HypernodeClientFactory;
+
+require_once 'vendor/autoload.php';
+
+$client = HypernodeClientFactory::create(getenv('HYPERNODE_API_TOKEN'));
+
+// For the Hypernode `johndoe` PHP version to 8.1 and Node.js version to 18
+$job = $client->settings->setBatch('johndoe', [
+    'php_version' => '8.1',
+    'nodejs_version' => '18'
+]);
+
+// If something has changed, wait for the changes to be applied.
+while ($job && !$job->completed()) {
+    sleep(2);
+    $job->refresh();
+}
+```
+
+## Supported features
+
+Here's a list of Hypernode API features implemented in the client.
+
+- Updating one or multiple Hypernode settings at once.
+- Querying/polling the logbook for the status of a job.

composer.json

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+{
+    "name": "hypernode/api-client",
+    "description": "Hypernode API Client for PHP",
+    "type": "library",
+    "autoload": {
+        "psr-4": {
+            "Hypernode\\Api\\": "src/"
+        }
+    },
+    "authors": [
+        {
+            "name": "Hypernode"
+        }
+    ],
+    "require": {
+        "ext-curl": "*",
+        "ext-json": "*",
+        "symfony/polyfill-php80": "^1.0",
+        "psr/http-client-implementation": "^1.0",
+        "php-http/client-common": "^2.5",
+        "php-http/discovery": "^1.14"
+    },
+    "require-dev": {
+        "friendsofphp/php-cs-fixer": "^3.9",
+        "guzzlehttp/guzzle": "^7.4",
+        "nikic/php-parser": "^4.14"
+    }
+}