[Keyboard] add Stream15 keyboard (#11515)

* add keyboard Stream15

* committted changes as suggested by drashna

* committed further changes as suggested

* Update info.json

removed excessive comma

* Update keyboards/nibiria/stream15/rules.mk

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/nibiria/stream15/keymaps/via/rules.mk

Co-authored-by: Ryan <fauxpark@gmail.com>

* Update keyboards/nibiria/stream15/readme.md

Co-authored-by: Ryan <fauxpark@gmail.com>

* resolved 2 more issues

Co-authored-by: Ryan <fauxpark@gmail.com>

keyboards/nibiria/stream15/info.json

@@ -0,0 +1,33 @@
+{
+    "keyboard_name": "Stream15",
+    "url": "",
+    "maintainer": "qmk",
+    "width": 5,
+    "height": 3,
+    "layouts": {
+        "LAYOUT_ortho_3x5": {
+            
+            "layout": [
+                {"label":"1", "x":0, "y":0},
+                {"label":"2", "x":1, "y":0},
+                {"label":"3", "x":2, "y":0},
+                {"label":"4", "x":3, "y":0},
+                {"label":"5", "x":4, "y":0},
+
+                {"label":"6", "x":0, "y":1},
+                {"label":"7", "x":1, "y":1},
+                {"label":"8", "x":2, "y":1},
+                {"label":"9", "x":3, "y":1},
+                {"label":"10", "x":4, "y":1},
+
+                {"label":"11", "x":0, "y":2},
+                {"label":"12", "x":1, "y":2},
+                {"label":"13", "x":2, "y":2},
+                {"label":"14", "x":3, "y":2},
+                {"label":"15", "x":4, "y":2}
+                
+                
+            ]
+        }
+    }
+}