git-bugreport: add page (#5097)

pages/common/git-bugreport.md

@@ -0,0 +1,15 @@
+# git bugreport
+
+> Captures debug information from the system and user, generating a text file to aid in the reporting of a bug in Git.
+
+- Create a new bugreport file in the current directory:
+
+`git bugreport`
+
+- Create a new bugreport file in the specified directory, creating it if it does not exist:
+
+`git bugreport --output-directory {{path/to/directory}}`
+
+- Create a new bugreport file with the specified filename suffix in `strftime` format:
+
+`git bugreport --suffix {{%m%d%y}}`