new icon: Couchbase (original, original-wordmark, plain-wordmark) (#1932)

* new icon: Couchbase (original)

* Added couchbase in devicon.json

* Added alias for Couchbase

* Added couchbase-original-wordmark

* Updated plain and plain-wordwork in devicon.json

* Added couchbase-plain.svg

* Added couchbase-plain-wordmark.svg

* Removed couchbase-plain.svg

File at icons/couchbase/couchbase-plain.svg removed since it is the same icon as couchbase-original.svg without the color.

* Updated devicon.json

Removed "plain" in SVG section of "couchbase".
Also removed alias for plain-wordmark.svg as it already exists.

* change font from original-wordmark to plain-wordmark

* optimize and unify paths for plain-wordmark

---------

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

Author: SAHIL-KUMAR-EE

devicon.json

@@ -1930,6 +1930,33 @@
         "color": "#59B3D8",
         "aliases": []
     },
+    {
+        "name": "couchbase",
+        "altnames": [],
+        "tags": [
+            "database",
+            "nosql",
+            "cloud"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "original-wordmark",
+                "plain-wordmark"
+            ],
+            "font": [
+                "original",
+                "plain-wordmark"
+            ]
+        },
+        "color": "#EA2328",
+        "aliases": [
+            {
+                "base": "original",
+                "alias": "plain"
+            }
+        ]
+    },
     {
         "name": "couchdb",
         "altnames": [