Adding translation team logos (#6519)

* Adding translation team logos

This upload provides both an .svg and a high resolution .png of translation team-specific data.table logos. The differences between the main logo and translation team-specific logos are the inclusion of a two- to four-letter language code as superscripted text at the end of the package name within the logo.  [Full code list here](https://en.wikipedia.org/wiki/List_of_ISO_639_language_codes). I used lowercase letters since this seems most common with these codes.

I am not sure if more specific country-based versions of the language codes are needed for any of the teams (the four-letter versions of the codes, [see list here](https://www.andiamo.co.uk/resources/iso-language-codes/)). I've made one for the Brazilian team, based on recent discussions (file name ending with "ptbr"), which provides a nice example of what this would look like.

Please let me know if any general changes are needed and if additional, country-specific language code versions would better serve any of the teams.

* propose Toby as CODEOWNER for logos

* Replacing svg of current FR logo

Text was not converted to path and not appropriately showing up in browser

* Update CODEOWNERS for translation team logos

tdhock requested that I take over as reviewer. Making this change

* Creating new directory

Creating new directory for language code-forward logos

* Delete .graphics/translation-team-codelogos/temp.txt

Bogus file to make a directory, getting rid of

* Create temp file (Again)

* Adding in language code-forward data.table logos

Including (simple) .svg and .png

* Directory creation went awry in last attempt

* Create temp.txt

* (Hopefully) final upload of code-forward logos

* Delete .graphics/translation-team-codelogos/temp.txt

* Delete .graphics/translation-team-logos/datatable-ptbr.png

Deleting since only the two-letter codes will be used

* Made modifications to placement of text

Fixed some height variation across the logos where possible

---------

Co-authored-by: Michael Chirico <[email protected]>
Co-authored-by: Michael Chirico <[email protected]>

Author: jmrung