docs: ChangesByCommitType Example ( Fixes #302, re #301 )

Examples/ChangesByCommitType.ugit.ps1

@@ -0,0 +1,46 @@
+<#
+.SYNOPSIS
+    Generates a Mermaid graph of changes by commit type.
+.DESCRIPTION
+    Generates a Mermaid graph of changes by the conventional commit type.
+#>
+param()
+
+Write-Information "Graphing $($MyInvocation.MyCommand.Name) for $($currentBranch.BranchName) branch."
+$gitRemote = git remote
+$headBranch = git remote |
+    Select-Object -First 1 |
+    git remote show |
+    Select-Object -ExpandProperty HeadBranch
+
+$currentBranch = git branch | ? IsCurrentBranch
+
+
+$commitList = 
+    if ($currentBranch.BranchName -ne $headBranch) {
+        git log "$($gitRemote.RemoteName)/$headBranch..$($CurrentBranch.BranchName)"
+    } else {
+        git log
+    }
+
+$groupedChangedSet = $commitList |
+    ? { $_.CommitType } |
+    Group-Object { $_.CommitType } -NoElement
+
+$mermaidDiagram = @(
+    "pie title Changes by Commit Type"
+    foreach ($changeSet in $groupedChangedSet) {
+        (' ' * 4),'"',$($changeSet.Name),'"',' : ',($changeSet.Count) -join ''
+    }
+) -join [Environment]::NewLine
+
+if ($env:GITHUB_STEP_SUMMARY) { 
+"
+~~~mermaid
+$mermaidDiagram
+~~~
+
+" |
+        Out-File -Append -FilePath $env:GITHUB_STEP_SUMMARY
+}
+