Add Panasonic makernotes

To generate the list, I copied the table from http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/Panasonic.html in a new document on my computer.
I added jquery and this script:
```
<script>
$(document).ready(function() {
  $('.cols').remove();
  var list = '';
  $('table.inner tr').each(function() {
    var label = $(this).find('td:nth(1)').text();
    var value = $(this).find('td:nth(0)').text();
    list += value + ' : "' + label + '",\n';
  });
  console.log(list);
});
</script>
```
Then I opened the new html document in my browser and copied the list from the console.