new icon: norg (original, plain) (#1346)

* bump npm version to v2.15.1

* feat: add neorg icon

* fix: rename neorg to norg

* fix: add proper orginal and plain versions

* fix: add altnames property in devicon.json

* fix: resize and optimize svg's

* fix: optimize original version of the svg

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

* fix: remove unnecessary height option from plain version

* fix: use most prevalent color from the original version for the primary color

Co-authored-by: Jørgen Kalsnes Hagen <43886029+Snailedlt@users.noreply.github.com>

* fix: add height option to plain version


Co-authored-by: Jørgen Kalsnes Hagen <43886029+Snailedlt@users.noreply.github.com>

* fix: make primary color lighter

Co-authored-by: Clemens Bastian <8781699+amacado@users.noreply.github.com>
Co-authored-by: Amacado <clemens.bastian@gmail.com>
Co-authored-by: Thomas Bui <43018778+Thomas-Boi@users.noreply.github.com>
Co-authored-by: David Leal <halfpacho@gmail.com>
Co-authored-by: Jørgen Kalsnes Hagen <43886029+Snailedlt@users.noreply.github.com>

devicon.json

@@ -4858,6 +4858,27 @@
         "color": "#3d3b47",
         "aliases": []
     },
+    {
+        "name": "norg",
+        "altnames": [
+            "neorg"
+        ],
+        "tags": [
+            "note-taking",
+            "organization"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "plain"
+            ],
+            "font": [
+                "plain"
+            ]
+        },
+        "color": "#4878be",
+        "aliases": []
+    },
     {
         "name": "npm",
         "altnames": [