Add -RepeatHeader to Format-Table to enable repeating header for each screen full (#8481)

When using a screen reader or just getting the output of a table with lots of rows, the header is no longer on the screen and the columns may no longer make sense without the context.  This change adds a `-RepeatHeader` switch to `Format-Table` to enable re-outputting the header after every screen full (minus 1 row).  Expectation is that the user is piping the output to a pager (e.g. less) which uses the bottom row for pager information.  I followed the `AutoSize` parameter as the way to get the parameter from the cmdlet into the deep formatting object where it's needed.

test/powershell/Modules/Microsoft.PowerShell.Utility/Format-Table.Tests.ps1

@@ -791,4 +791,12 @@ A Name                                  B
                 [system.management.automation.internal.internaltesthooks]::SetTestHook('SetConsoleWidthToZero', $false)
             }
         }
+
+        It "-RepeatHeader should output the header at every screen full" -Skip:([Console]::WindowHeight -eq 0) {
+            $numHeaders = 4
+            $numObjects = [Console]::WindowHeight * $numHeaders
+            $out = 1..$numObjects | ForEach-Object { @{foo=$_} } | Format-Table -RepeatHeader | Out-String
+            $lines = $out.Split([System.Environment]::NewLine)
+            ($lines | Select-String "Name\s*Value").Count | Should -Be ($numHeaders + 1)
+        }
     }