Add sample file of Spanish-tagged version of gist annotations

[rjyounes]

See #685. This is only required to be a sample, not a complete set.

Open questions:

• 2- or 4- letter language tags (language or language+country)?
• Directory structure and file naming convention

[rjyounes]

@pmcb55 Unfortunately, I can't assign the issue to you because you are not in the SA organization and we currently don't give outside collaborators write permission. I'm assigning it to myself to track and will ping you when we need it, if you haven't completed it already. You can submit the PR from a fork.

[rjyounes]

Team discussion on 2023-05-25 led to the following conclusions:

  * Related issues: 
	  * [Automated generation of en version](https://github.com/semanticarts/gist/issues/840)
	  * [Sample French version](https://github.com/semanticarts/gist/issues/841)
	  * [Sample Spanish version](https://github.com/semanticarts/gist/issues/851) (Pat McBennett to submit PR)
	  * [Documentation](https://github.com/semanticarts/gist/issues/842)
* Open discussion points
    * Language or language+subtag? Subtag could be region or script. E.g., in Chinese the script is of primary significance in written text, not the region. From John Cowan.
      * Maybe language only if there are no significant regional distinctions, otherwise language+region? (Note, for accuracy the subtags are not always 2 letters). 
      * Don't need to prescribe, just let people submit what they want to? We could reject a region tag where there are no regional distinctions.
      * What do we want to do for our versions?
	      * English - use language only, may change in future
	      * French - use language only, may change in future
     * How do we review PRs in language we have no expertise in? 
         * Trust factor
         * In-house expertise
	     * Test in Google translate (to English), if they look OK accept them. If not, reject the whole batch.
	     * Add disclaimer for those we haven't been able to review, and also that they may not be up-to-date as gist evolves.
	     * SA in-house expertise:
		     * French: Doug, Jess
		     * German: Rebecca
		     * Arabic: Dalia
		     * Simplified and Traditional Chinese: Katie (some)
		     * Japanese: Katie (some)
		     * Russian: Irina
		     * Italian: Irina
    * No default untagged version - our default should be `en-US`. From John Cowan.
      * Then this is a major change.
      * Decision: keep untagged versions as defaults in ontology files. Can change later in a major release. 
    *  File names and directory structure. 
	    * Only release in Turtle. 
	    * Most likely only gistCore, not supplementary ontologies, will be translated.
	    * There might be a translation of the readme if someone wants to do it.
	    * So, we'll only have one ontology file per language. Naming conventions:
		    * `gistCore.en.ttl`
		    * `README.en.md`
	    * So use one directory. [We didn't decide on a directory name, I propose `language_tagged_annotations` or similar.]

[rjyounes]

Closing - see discussion on #840.