Adding formatter for sentences (re #242)

Author: James Brundage

Formatting/PipeScript.Sentence.format.ps1

@@ -0,0 +1,24 @@
+Write-FormatView -TypeName PipeScript.Sentence -Action {
+    
+    Write-FormatViewExpression -ForegroundColor Verbose -Property Keyword -If { $_.Command }
+    Write-FormatViewExpression -ForegroundColor Success -ScriptBlock { " <# $($_.Command) #> " } -If { $_.Command }  
+    
+    Write-FormatViewExpression -ScriptBlock { ' ' }
+    Write-FormatViewExpression -ScriptBlock {
+        @(foreach ($clause in $_.Clauses) {
+            $wordNumber = -1
+            foreach ($word in $clause.Words) {
+                $wordNumber++
+                if (-not $wordNumber) {
+                    Format-RichText -ForegroundColor Warning -InputObject "$word"
+                } else {
+                    Format-RichText -InputObject "$word"
+                }
+            }
+        }) -join ' '
+    }
+    
+    Write-FormatViewExpression -ForegroundColor Magenta -If { $_.Arguments -and -not $_.Clauses } -ScriptBlock {
+        $_.Arguments -join ' '
+    }
+}