Update release process to create versioned docs (#8817)

* Update release process to create versioned docs
* Remove test, separate tag

scripts/utils.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+
+# tag is next|latest|master|x.x.x
+# https://www.chartjs.org/dist/$tag/
+# https://www.chartjs.org/docs/$tag/
+# https://www.chartjs.org/samples/$tag/
+function tag_from_version {
+    local version=$1
+    local mode=$2
+    local tag=''
+    if [ "$version" == "master" ]; then
+        tag=master
+    elif [[ "$version" =~ ^[^-]+$ ]]; then
+      if [[ "$mode" == "release" ]]
+        tag=$version
+      else
+        tag=latest
+      fi
+    else
+        tag=next
+    fi
+    echo $tag
+}