feat: Porting Ruby Template to Language Function (Fixes #622)

Commands/Languages/Ruby/Ruby-Language.ps.ps1

@@ -0,0 +1,27 @@
+Language function Ruby {
+<#
+.SYNOPSIS
+    Ruby Language Definition.
+.DESCRIPTION
+    Allows PipeScript to generate Ruby.
+
+    PipeScript can be embedded in a multiline block that starts with ```=begin{``` and ends with } (followed by ```=end```)
+#>
+[ValidatePattern('\.rb$')]
+param()
+
+
+    # We start off by declaring a number of regular expressions:
+
+    $startComment = '(?>[\r\n]{1,3}\s{0,}=begin[\s\r\n]{0,}\{)'
+    $endComment   = '(?>}[\r\n]{1,3}\s{0,}=end)'
+
+    $ignoreEach = '[\d\.]+',
+        '""',
+        "''"
+
+    $IgnoredContext = "(?<ignore>(?>$($ignoreEach -join '|'))\s{0,}){0,1}"
+
+    $startPattern = "(?<PSStart>${IgnoredContext}${startComment})"    
+    $endPattern   = "(?<PSEnd>${endComment}${IgnoredContext})"
+}