Add basic repo files

.editorconfig

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+# This file is for unifying the coding style for different editors and IDEs
+# editorconfig.org
+
+# WordPress Coding Standards
+# https://make.wordpress.org/core/handbook/coding-standards/
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = tab
+
+[*.yml]
+indent_style = space
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false
+
+[{*.txt,wp-config-sample.php}]
+end_of_line = crlf

.gitignore

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+vendor/
+composer.lock

composer.json

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+{
+	"name": "aristath/sqlite",
+	"license": "GPL-2.0-or-later",
+	"description": "SQLite integration plugin for WordPress.",
+	"homepage": "https://github.com/aristath/sqlite",
+	"keywords": [ "wordpress", "plugin", "database", "sqlite" ],
+	"support": {
+		"issues": "https://github.com/aristath/sqlite/issues"
+	},
+	"require": {
+		"php": ">=5.6"
+	},
+	"require-dev": {
+		"dealerdirect/phpcodesniffer-composer-installer": "^0.7.0",
+		"squizlabs/php_codesniffer": "3.6.0",
+		"wp-coding-standards/wpcs": "~2.3.0",
+		"phpcompatibility/phpcompatibility-wp": "~2.1.3",
+		"yoast/phpunit-polyfills": "^1.0.1"
+	},
+	"config": {
+		"allow-plugins": {
+			"dealerdirect/phpcodesniffer-composer-installer": true
+		}
+	}
+}

phpcs.xml.dist

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+<?xml version="1.0"?>
+<ruleset name="WordPress Coding Standards">
+	<description>Apply WordPress Coding Standards</description>
+
+	<!-- Only scan PHP files. -->
+	<arg name="extensions" value="php"/>
+
+	<!-- Set the memory limit to 256M.
+		 For most standard PHP configurations, this means the memory limit will temporarily be raised.
+		 Ref: https://github.com/squizlabs/PHP_CodeSniffer/wiki/Advanced-Usage#specifying-phpini-settings
+	-->
+	<ini name="memory_limit" value="256M"/>
+
+	<!-- Strip the filepaths down to the relevant bit. -->
+	<arg name="basepath" value="./"/>
+
+	<!-- Check up to 20 files simultaneously. -->
+	<arg name="parallel" value="20"/>
+
+	<!-- Show sniff codes in all reports. -->
+	<arg value="ps"/>
+
+	<file>.</file>
+
+	<rule ref="WordPress-Core"/>
+	<rule ref="WordPress.CodeAnalysis.EmptyStatement"/>
+
+	<!-- Directories and third party library exclusions. -->
+	<exclude-pattern>/vendor/*</exclude-pattern>
+
+	<!-- Allow the WP DB Class and related tests for usage of direct database access functions. -->
+	<rule ref="WordPress.DB.RestrictedClasses.mysql__PDO">
+		<exclude-pattern>/wp-includes/*.php</exclude-pattern>
+	</rule>
+	<rule ref="WordPress.DB.RestrictedFunctions">
+		<exclude-pattern>/wp-includes/*.php</exclude-pattern>
+	</rule>
+</ruleset>