AD-HOC style (*): Added lint configuration

Recently, there have been a number of changes in the project. Largely,
this has been refactoring related, and no actual code changes have taken
place. However, it stands to reason that code changes might be
introduced in future.

This commit adds some configuration to assist in sanity checking these
changes to ensure they adhere to known standards, commonly in use across
all sitewards projects.
:

.arclint

@@ -0,0 +1,14 @@
+{
+  "linters": {
+    "php": {
+      "type": "php",
+      "include": "(\\.(php|phtml)$)"
+    },
+    "phpcs": {
+      "type": "phpcs",
+      "bin": "phpcs",
+      "include": "(\\.(php|phtml)$)",
+      "phpcs.standard": "phpcs.xml"
+    }
+  }
+}

CHANGELOG.md

@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 ### Changed
 
 - Removed orphaned files from the previous deletion of Netzarbeiter/Customer-Activation, hard coded in the repo. @jhoelzl
+- (Dev): Added lints
 
 ### Notes
 

phpcs.xml

@@ -0,0 +1,29 @@
+<?xml version="1.0"?>
+<ruleset name="SitewardsStandard">
+    <description>Sitewards coding standards.</description>
+
+    <ini name="date.timezone" value="Europe/Berlin" />
+
+    <rule ref="PSR2" />
+
+    <rule ref="PSR1.Classes.ClassDeclaration">
+        <exclude-pattern>*app/code*</exclude-pattern>
+        <exclude-pattern>*SitewardsStandard*</exclude-pattern>
+    </rule>
+
+    <rule ref="Squiz.Classes.ValidClassName">
+        <exclude-pattern>*app/code*</exclude-pattern>
+        <exclude-pattern>*SitewardsStandard*</exclude-pattern>
+    </rule>
+
+    <rule ref="PSR2.Methods.MethodDeclaration.Underscore">
+        <exclude-pattern>*app/code*</exclude-pattern>
+        <exclude-pattern>*SitewardsStandard*</exclude-pattern>
+    </rule>
+
+    <!-- Ensure multiple statements that are sequential are aligned -->
+    <rule ref="Generic.Formatting.MultipleStatementAlignment"/>
+
+    <!-- Ensure there is no superfleus whitespace -->
+    <rule ref="Squiz.WhiteSpace.SuperfluousWhitespace" />
+</ruleset>