Add provisional obi component

Added a new component called provisional_obi containing the new COA terms we added to OBI (pulled from the physical_examination.tsv OBI template) as a provisional measure to get the terms into CPONT while we wait for them to be included in the official OBI release. Also added IAO as an import and added some additional terms (listed below) that are referenced in the physical_examination.tsv template (needed so that ROBOT could process the template) to the external_import.tsv template.

ID	LABEL	TYPE
IAO:0000111	editor preferred term	owl:AnnotationProperty
IAO:0000115	definition	owl:AnnotationProperty
IAO:0000117	term editor	owl:AnnotationProperty
IAO:0000119	definition source	owl:AnnotationProperty
IAO:0000136	is about	owl:ObjectProperty
IAO:0000221	is quality measurement of	owl:ObjectProperty
IAO:0000233	term tracker item	owl:AnnotationProperty
OBI:0000299	has_specified_output	owl:ObjectProperty
UBERON:0000165	mouth	owl:Class
UBERON:0001723	tongue	owl:Class