Add IIS config for easier windows setup (#66)

* Add IIS config for easier windows setup

* Use regex from .nginx.conf and comment out rule

Uses the more common regex which reduces the number of rules and also commented out for consistency with nginx and apache

* Used enabled flag for no-public restrictions

Also fixes any indentations

public/web.config

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <system.webServer>
+        <defaultDocument>
+            <files>
+                <clear />
+                <add value="Index.php" />
+            </files>
+        </defaultDocument>
+        <rewrite>
+            <rules>
+                <!-- Changed `enabled=` to true in the rule below if you are not using the `public` directory to
+                prevent sensitve resources from being exposed -->
+                <rule name="Disallow sensitive directories" enabled="false" stopProcessing="true">
+                    <match url="^/(\.git|composer\.(json|lock)|auth\.json|config\.php|flarum|storage|vendor)" ignoreCase="false" />
+                    <action type="CustomResponse" url="/" statusCode="403" statusReason="Forbidden" statusDescription="Forbidden" />
+                </rule>
+                <rule name="Handle index.php re-write" stopProcessing="true">
+                    <match url="^" ignoreCase="false" />
+                    <conditions logicalGrouping="MatchAll">
+                        <add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" negate="true" />
+                        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" negate="true" />
+                    </conditions>
+                    <action type="Rewrite" url="index.php" appendQueryString="true" />
+                </rule>
+            </rules>
+        </rewrite>
+  </system.webServer>
+</configuration>