Factor `TextValue` out of nmdc-schema and migrate accordingly about nmdc-schema

[turbomam]

PREFIX nmdc: <https://w3id.org/nmdc/>
select 
?p (count(?s) as ?count)
    where {
    ?s a nmdc:TextValue ;
       ?p ?o .
}
group by ?p

p	count
rdf:type	11885
nmdc:has_raw_value	11885

[turbomam]

PREFIX nmdc: <https://w3id.org/nmdc/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
select 
?t ?p (count(?s) as ?count)
where {
    ?t rdfs:subClassOf* nmdc:AttributeValue .
    ?s a ?t ;
       ?p ?o .
}
group by ?t ?p
order by ?t ?p

row	t	p	count
1	nmdc:ControlledIdentifiedTermValue	rdf:type	26318
2	nmdc:ControlledIdentifiedTermValue	nmdc:has_raw_value	10622
3	nmdc:ControlledIdentifiedTermValue	nmdc:term	26318
4	nmdc:ControlledTermValue	rdf:type	7748
5	nmdc:ControlledTermValue	nmdc:has_raw_value	7748
6	nmdc:ControlledTermValue	nmdc:term	435
7	nmdc:GeolocationValue	rdf:type	8158
8	nmdc:GeolocationValue	wgs:lat	8158
9	nmdc:GeolocationValue	wgs:long	8158
10	nmdc:GeolocationValue	nmdc:has_raw_value	2931
11	nmdc:ImageValue	rdf:type	7
12	nmdc:ImageValue	nmdc:url	7
13	nmdc:PersonValue	schema1:email	1591
14	nmdc:PersonValue	rdf:type	2159
15	nmdc:PersonValue	nmdc:has_raw_value	1798
16	nmdc:PersonValue	nmdc:name	1750
17	nmdc:PersonValue	nmdc:orcid	266
18	nmdc:PersonValue	nmdc:profile_image_url	23
19	nmdc:QuantityValue	rdf:type	23790
20	nmdc:QuantityValue	nmdc:has_maximum_numeric_value	5238
21	nmdc:QuantityValue	nmdc:has_minimum_numeric_value	5211
22	nmdc:QuantityValue	nmdc:has_numeric_value	18487
23	nmdc:QuantityValue	nmdc:has_raw_value	4502
24	nmdc:QuantityValue	nmdc:has_unit	22375
25	nmdc:TextValue	rdf:type	11885
26	nmdc:TextValue	nmdc:has_raw_value	11885
27	nmdc:TimestampValue	rdf:type	7673
28	nmdc:TimestampValue	nmdc:has_raw_value	7673

[turbomam]

ImageValue and TimestampValue only use a single sub-slot, too, beside asserting their type.