Add No Bucket Check for S3 Media Sources (#16496)

### What does it do?
Add a "No Bucket Check" option for users with limited access.

### Why is it needed?
Some access keys aren't authorized to list buckets, so will fail to
initialize the S3 source when it checks if the bucket exists.

### How to test
This would take some set up. Primarily, this is addressing an issue we
are facing with updating our internal S3 provider. However, it is a
common feature and the logic was ported from rclone
https://rclone.org/s3/#s3-no-check-bucket

core/lexicon/en/source.inc.php

@@ -84,6 +84,7 @@
 $_lang['prop_s3.endpoint_desc'] = 'Alternative S3-compatible endpoint URL, e.g., "https://s3.<region>.example.com". Review your S3-compatible provider’s documentation for the endpoint location. Leave empty for Amazon S3';
 $_lang['prop_s3.region_desc'] = 'Region of the bucket. Example: us-west-1';
 $_lang['prop_s3.prefix_desc'] = 'Optional path/folder prefix';
+$_lang['prop_s3.no_check_bucket_desc'] = 'If set, don\'t attempt to check the bucket exists. It can be needed if the access key you are using does not have bucket creation/list permissions.';
 $_lang['s3_no_move_folder'] = 'The S3 driver does not support moving of folders at this time.';
 
 /* ftp source type */

core/src/Revolution/Sources/modS3MediaSource.php

@@ -38,6 +38,7 @@ public function initialize()
         $bucket = $this->xpdo->getOption('bucket', $properties, '');
         $prefix = $this->xpdo->getOption('prefix', $properties, '');
         $endpoint = $this->xpdo->getOption('endpoint', $properties, '');
+        $noBucketCheck = $this->xpdo->getOption('no_check_bucket', $properties, false);
 
         $config = [
             'credentials' => [
@@ -54,7 +55,7 @@ public function initialize()
 
         try {
             $client = new S3Client($config);
-            if (!$client->doesBucketExist($bucket)) {
+            if (!$noBucketCheck && !$client->doesBucketExist($bucket)) {
                 $this->xpdo->log(
                     xPDO::LOG_LEVEL_ERROR,
                     $this->xpdo->lexicon('source_err_init', ['source' => $this->get('name')])
@@ -158,6 +159,14 @@ public function getDefaultProperties()
                 'value' => '',
                 'lexicon' => 'core:source',
             ],
+            'no_check_bucket' => [
+                'name' => 'no_check_bucket',
+                'desc' => 'prop_s3.no_check_bucket_desc',
+                'type' => 'combo-boolean',
+                'options' => '',
+                'value' => false,
+                'lexicon' => 'core:source',
+            ],
             'imageExtensions' => [
                 'name' => 'imageExtensions',
                 'desc' => 'prop_s3.imageExtensions_desc',