feat(icons): added calendar-sync icon (#2590)

* Rename box-select.svg to square-dashed.svg

* Update and rename box-select.json to square-dashed.json

* Add aliases

* Added icons/calendar-sync.svg

* Added icons/calendar-sync.json

* Delete icons/square-dashed.json

* Delete icons/square-dashed.svg

* Optimize calendar-sync.svg

* Move arrows 0.5px down

* Update icons/calendar-sync.svg

Co-authored-by: Jakob Guddas <github@jguddas.de>

* Maintain icon symmetry

* Remove files category from meta data

---------

Co-authored-by: Jakob Guddas <github@jguddas.de>
Co-authored-by: Eric Fennis <eric.fennis@gmail.com>

icons/calendar-sync.json

@@ -0,0 +1,30 @@
+{
+  "$schema": "../icon.schema.json",
+  "contributors": [
+    "danielbayley",
+    "jguddas",
+    "karsa-mistmere",
+    "chessurisme"
+  ],
+  "tags": [
+    "repeat",
+    "refresh",
+    "reconnect",
+    "transfer",
+    "backup",
+    "date",
+    "month",
+    "year",
+    "event",
+    "subscribe",
+    "recurring",
+    "schedule",
+    "reminder",
+    "automatic",
+    "auto"
+  ],
+  "categories": [
+    "arrows",
+    "time"
+  ]
+}