feat: Added Swahili translations (DenverCoder1#472)

Author: GitataY

src/translations.php

@@ -227,6 +227,14 @@
         "Longest Week Streak" => "दीर्घतमाः निरन्तरसप्ताहाः",
         "Present" => "वर्तमान",
     ],
+    "sw" => [
+        "Total Contributions" => "Jumla ya Michango",
+        "Current Streak" => "Mfululizo wa sasa",
+        "Longest Streak" => "Mfululizo mrefu zaidi",
+        "Week Streak" => "Mfululizo wa wiki",
+        "Longest Week Streak" => "Mfululizo mrefu zaidi wa wiki",
+        "Present" => "Sasa",
+    ],
     "ta" => [
         "Total Contributions" => "மொத்த\nபங்களிப்புகள்",
         "Current Streak" => "மிக சமீபத்திய பங்களிப்புகள்",