Rename square-* icons appropriately (#1384)

* Rename `square-gantt` to `gantt-square`

* Rename `square-dot` to `dot-square`

* Rename `square-kanban` icons to `kanban-square`

* Rename `square-code` to `code-square`

* Rename `square-asterisk` to `asterisk-square`

* Rename `square-equal` to `equal-square`

* Rename `square-slash` to `slash-square`

* Cleanup merge conflicts

* Add alias back

---------

Co-authored-by: Eric Fennis <eric.fennis@gmail.com>

icons/asterisk-square.json

@@ -20,5 +20,8 @@
     "account",
     "maths",
     "development"
+  ],
+  "alaias": [
+    "square-asterisk"
   ]
 }

icons/code-square.json

@@ -14,5 +14,8 @@
   "categories": [
     "text",
     "development"
+  ],
+  "aliases": [
+    "square-code"
   ]
 }

icons/dot-square.json

@@ -14,5 +14,8 @@
   "categories": [
     "shapes",
     "development"
+  ],
+  "aliases": [
+    "square-dot"
   ]
 }

icons/equal-square.json

@@ -12,5 +12,8 @@
   "categories": [
     "maths",
     "shapes"
+  ],
+  "aliases": [
+    "square-equal"
   ]
 }

icons/gantt-chart-square.json

@@ -31,6 +31,7 @@
     "design"
   ],
   "aliases": [
+    "gantt-square",
     "square-gantt"
   ]
-}
+}

icons/kanban-square-dashed.json

@@ -30,4 +30,4 @@
   "aliases": [
     "square-kanban-dashed"
   ]
-}
+}

icons/kanban-square.json

@@ -29,4 +29,4 @@
   "aliases": [
     "square-kanban"
   ]
-}
+}

icons/slash-square.json

@@ -19,5 +19,8 @@
     "shapes",
     "development",
     "maths"
+  ],
+  "aliases": [
+    "square-slash"
   ]
 }