Introduce native Gutenberg controls

• Register meta
• Enqueue script
• Switch to use_block_editor_for_post_type and remove the option
• Build component
• Add sanitize callback to handle special cases
• Add auth callback to allow "private" meta to be edited
• Add padding between modal buttons
• Don't hide UI if set to 0, as there's no way to update the setting
• Switch to @wordpress/scripts
• Consider moving Gutenberg bits, and/or REST API elements, to their own class.

languages/wp-revisions-control.pot

-# Copyright (C) 2021 Erick Hitter
+# Copyright (C) 2022 Erick Hitter
 # This file is distributed under the same license as the WP Revisions Control package.
 msgid ""
 msgstr ""
 "Project-Id-Version: WP Revisions Control 1.4\n"
 "Report-Msgid-Bugs-To: "
 "https://wordpress.org/support/plugin/wp-revisions-control\n"
-"POT-Creation-Date: 2021-03-28 07:30:21+00:00\n"
+"POT-Creation-Date: 2022-06-05 05:36:50+00:00\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=utf-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"PO-Revision-Date: 2021-MO-DA HO:MI+ZONE\n"
+"PO-Revision-Date: 2022-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
-"X-Generator: grunt-wp-i18n 0.5.4\n"
-"X-Poedit-KeywordsList: "
-"__;_e;_x:1,2c;_ex:1,2c;_n:1,2;_nx:1,2,4c;_n_noop:1,2;_nx_noop:1,2,3c;esc_"
-"attr__;esc_html__;esc_attr_e;esc_html_e;esc_attr_x:1,2c;esc_html_x:1,2c;\n"
 "Language: en\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 "X-Poedit-Country: United States\n"
 "X-Poedit-SourceCharset: UTF-8\n"
+"X-Poedit-KeywordsList: "
+"__;_e;_x:1,2c;_ex:1,2c;_n:1,2;_nx:1,2,4c;_n_noop:1,2;_nx_noop:1,2,3c;esc_"
+"attr__;esc_html__;esc_attr_e;esc_html_e;esc_attr_x:1,2c;esc_html_x:1,2c;\n"
 "X-Poedit-Basepath: ../\n"
 "X-Poedit-SearchPath-0: .\n"
 "X-Poedit-Bookmarks: \n"
 "X-Textdomain-Support: yes\n"
+"X-Generator: grunt-wp-i18n 1.0.3\n"
 
 #: inc/class-wp-revisions-control-bulk-actions.php:84
 msgid "Purge excess revisions"