Consider adding keyword dictionary "title" vs datamodel schema property "title" comparison

[braingram]

Uncal files contain fits headers formatted based on the keyword dictionary including "sections":

        Observation identifiers

DATE-OBS= '2020-06-05'         / [yyyy-mm-dd] UTC date at start of exposure

which I believe come from top file property titles like the following:

                "observation" : {
                    "title" : "Observation identifiers",

(aside: It's unclear at the moment how these relate to "Section" in the keyword definition)

"cal" files have similar sections

        Observation identifiers

DATE-OBS= '2019-10-15'         / [yyyy-mm-dd] UTC date at start of exposure

However these are derived from the datamodel schemas:

stdatamodels/src/stdatamodels/fits_support.py

Lines 230 to 233 in 2c39853

	title = schema.get('title')
	if title is not None:
	current_comment_stack = fits_context.comment_stack
	current_comment_stack.append(ensure_ascii(title))

Using the "title" keyword in the schemas:

stdatamodels/src/stdatamodels/jwst/datamodels/schemas/core.schema.yaml

Lines 156 to 157 in 2c39853

	observation:
	title: Observation identifiers

If we want these to agree we would benefit from having the kwtool compare these for differences.