Add icons for GN and NinjaFiles

Neither GN or Ninja have logos of their own. These icons were created to
scratch an itch their author had while waiting for V8 to recompile.

Culprit: Homebrew/homebrew-core#7168

Project homepages:
* GN: https://www.chromium.org/developers/gn-build-configuration
* Ninja: https://ninja-build.org/

charmap.md

@@ -136,6 +136,7 @@ These codepoints are locked in stone: once set, they're guaranteed never to chan
 	<tbody><tr><td align="center"><a name="Gentoo" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Gentoo.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Gentoo.svg" height="34" valign="bottom" hspace="3" alt="&#xE96D;"/></a></td><td><b>Gentoo</b></td><td><a name="E96D"></a><code>\E96D</code></td></tr></tbody>
 	<tbody><tr><td align="center"><a name="Glade" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Glade.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Glade.svg" height="34" valign="bottom" hspace="3" alt="&#xE938;"/></a></td><td><b>Glade</b></td><td><a name="E938"></a><code>\E938</code></td></tr></tbody>
 	<tbody><tr><td align="center"><a name="Glyphs" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Glyphs.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Glyphs.svg" height="34" valign="bottom" hspace="3" alt="&#x47;"/></a></td><td><b>Glyphs</b></td><td><a name="47"></a><code>\47</code></td></tr></tbody>
+	<tbody><tr><td align="center"><a name="GN" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/GN.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/GN.svg" height="34" valign="bottom" hspace="3" alt="&#xEA25;"/></a></td><td><b>GN</b></td><td><a name="EA25"></a><code>\EA25</code></td></tr></tbody>
 	<tbody><tr><td align="center"><a name="GNU" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/GNU.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/GNU.svg" height="34" valign="bottom" hspace="3" alt="&#xE679;"/></a></td><td><b>GNU</b></td><td><a name="E679"></a><code>\E679</code></td></tr></tbody>
 	<tbody><tr><td align="center"><a name="Go" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Go.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Go.svg" height="34" valign="bottom" hspace="3" alt="&#xE624;"/></a></td><td><b>Go</b></td><td><a name="E624"></a><code>\E624</code></td></tr></tbody>
 	<tbody><tr><td align="center"><a name="Godot" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Godot.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Godot.svg" height="34" valign="bottom" hspace="3" alt="&#xE974;"/></a></td><td><b>Godot</b></td><td><a name="E974"></a><code>\E974</code></td></tr></tbody>
@@ -311,6 +312,7 @@ These codepoints are locked in stone: once set, they're guaranteed never to chan
 	<tbody><tr><td align="center"><a name="Service Fabric" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Service-Fabric.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Service-Fabric.svg" height="34" valign="bottom" hspace="3" alt="&#xE9DB;"/></a></td><td><b>Service Fabric</b></td><td><a name="E9DB"></a><code>\E9DB</code></td></tr></tbody>
 	<tbody><tr><td align="center"><a name="Shen" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Shen.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Shen.svg" height="34" valign="bottom" hspace="3" alt="&#xE9A7;"/></a></td><td><b>Shen</b></td><td><a name="E9A7"></a><code>\E9A7</code></td></tr></tbody>
 	<tbody><tr><td align="center"><a name="Shopify" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Shopify.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Shopify.svg" height="34" valign="bottom" hspace="3" alt="&#xE9CF;"/></a></td><td><b>Shopify</b></td><td><a name="E9CF"></a><code>\E9CF</code></td></tr></tbody>
+	<tbody><tr><td align="center"><a name="Shuriken" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Shuriken.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Shuriken.svg" height="34" valign="bottom" hspace="3" alt="&#x272B;"/></a></td><td><b>Shuriken</b></td><td><a name="272B"></a><code>\272B</code></td></tr></tbody>
 	<tbody><tr><td align="center"><a name="Sigils" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Sigils.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Sigils.svg" height="34" valign="bottom" hspace="3" alt="&#x1F764;"/></a></td><td><b>Sigils</b></td><td><a name="1F764"></a><code>\1F764</code></td></tr></tbody>
 	<tbody><tr><td align="center"><a name="SilverStripe" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/SilverStripe.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/SilverStripe.svg" height="34" valign="bottom" hspace="3" alt="&#xE800;"/></a></td><td><b>SilverStripe</b></td><td><a name="E800"></a><code>\E800</code></td></tr></tbody>
 	<tbody><tr><td align="center"><a name="Sinatra" href="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Sinatra.svg"><img src="https://cdn.rawgit.com/Alhadis/FileIcons/master/svg/Sinatra.svg" height="34" valign="bottom" hspace="3" alt="&#xEA03;"/></a></td><td><b>Sinatra</b></td><td><a name="EA03"></a><code>\EA03</code></td></tr></tbody>