Manage chevron in GFF start and stop

[JeanMainguy]

In the GFF files, chevrons ('<' or '>') can be found in the start and stop positions to indicate that a gene starts before the beginning of the contig or extends beyond the end of the contig. This special case was previously handled when parsing GBFF files but not in GFF files.

This PR introduces functionality to handle chevrons in GFF files. When chevrons are detected in the start or stop positions, the gene is considered a pseudogene, similar to the behavior implemented for GBFF files.

Example of GFF with chevrons:

GFF_chevrons/822.gff:1574C00058.1	feature	gene	900	>1298	.	+	.	locus_tag=ACIA0v1_580002
GFF_chevrons/822.gff:1574C00058.1	feature	CDS	900	>1298	.	+	0	ID=5549946;db_xref=MicroScope:5549946;ec_number=2.3.1.-;inference=ab initio prediction:AMIGene;locus_tag=ACIA0v1_580002;product=beta-ketoadipyl CoA thiolase %28fragment%29;transl_table=11;translation=MKNAYIIDAIRTPFGRYASGLAPVRADDLGAVPIKALMQRNPSVDWEQVDDVIYGCANQAGEDNRNVGRMSALLAGLPYQVPATTINRLCGSSLDAIAIAARAIKAGEANLVIAGGVESMSRAPYVMGKSDSA

[JeanMainguy]

I added a fake plasmid to the testingDataset repository to test chevron handling using a projection in the CI.