New icon: dotnetcore (original) (#533)

* Added amber framework

* Added dotnet core

* Add new icon: dot-net-core (original)

* Remove amber

* Add plain version and rename icon to dot-net-core

* Rename dot-net-core to dotnetcore

* Add blank line to svgs

Co-authored-by: kirinnee <kirinnee97@gmail.com>
Co-authored-by: David Leal <halfpacho@gmail.com>

devicon.json

@@ -925,6 +925,23 @@
         "color": "#1384c8",
         "aliases": []
     },
+    {
+        "name": "dotnetcore",
+        "tags": [
+            "framework"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "plain"
+            ],
+            "font": [
+                "plain"
+            ]
+        },
+        "color": "#623697",
+        "aliases": []
+    },
     {
         "name": "drupal",
         "tags": [