feat: adds transcript structure generator

tests/.DS_Store

tests/resources/.DS_Store

tests/resources/test_transcript_structure/RP1_RIK.gtf

...ources/test_transcript_structure/Rik_5_Rp1_5_no_title.csv

...resources/test_transcript_structure/Rik_5_Rp1_5_title.csv

tests/test_transcript_structure.py

transcript_structure/.DS_Store

transcript_structure/Generate_transcript_structure.py

transcript_structure/Outputs/.DS_Store

transcript_structure/Outputs/csv_new.csv

transcript_structure/Outputs/gtf_new.gtf

transcript_structure/__init__.py

transcript_structure/gene_count/.DS_Store

transcript_structure/gene_count/Rik_5.csv

transcript_structure/gene_count/Rik_5_Rp1_5.csv

transcript_structure/gene_count/Rp1_5.csv

transcript_structure/gtf/.DS_Store

transcript_structure/gtf/coordinates.gtf

transcript_structure/gtf/gtf_explained.xlsx