Hygiene: Bring missing SVGO config file from MobileFrontend

During MobileFrontend/MinervaNeue split we forgot to copy the
SVGO config file. This files is required for proper svgo execution,
othwerwise it complains that file is missing and
dev-scripts/svg_check.sh script fails

Change-Id: Ic68257091486b001126974833088666754652291

.svgo.yml

@@ -0,0 +1,12 @@
+plugins:
+
+  # If the SVG doesn't start with an XML declaration, then it's MIME type will
+  # be detected as "text/plain" rather than "image/svg+xml" by libmagic and,
+  # consequently, MediaWiki's CSSMin CSS minifier. libmagic's default database
+  # currently requires that SVGs contain an XML declaration
+  # <https://github.com/threatstack/libmagic/blob/master/magic/Magdir/sgml#L5>.
+  - removeXMLProcInst: false
+
+  - cleanupIDs: false
+  - collapseGroups: false
+  - mergePaths: false