Refactored function names in R/fa2domain.R

[teddyCodex]

Description

Refactored functions in R/fa2domain.R based on #7

Original	Modified	User Facing
exec_interproscan	runIPRScan	✅
get_df_ipr_col_names	getIPRScanColNames	✅
get_df_ipr_col_types	getIPRScanColTypes	✅
read_iprscan_tsv	readIPRScanTSV	✅
make_df_iprscan_domains	createIPRScanDomainTable	✅
df_iprscan_domains2fasta	convertIPRScanDomainTable2FA	✅
fasta2fasta_domain	getDomainsFromFA	✅

Fixes issue #45

What kind of change(s) are included?

• [ ] Feature (adds or updates new capabilities)
• [x] Bug fix (fixes an issue).
• [ ] Enhancement (adds functionality).
• [ ] Breaking change (these changes would cause existing functionality to not work as expected).

Checklist

Please ensure that all boxes are checked before indicating that this pull request is ready for review.

• [x] I have read and followed the CONTRIBUTING.md guidelines.
• [x] I have searched for existing content to ensure this is not a duplicate.
• [x] I have performed a self-review of these additions (including spelling, grammar, and related).
• [x] I have added comments to my code to help provide understanding.
• [x] I have added a test which covers the code changes found within this PR.
• [x] I have deleted all non-relevant text in this pull request template.
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[teddyCodex]

@jananiravi @the-mayer File containing other occurrences of the functions. Please let me know if I should commit this file as well.

function_occurrences #45.txt

[jananiravi]

@teddyCodex, few minor fixes | also indicated in the original issue: runInterProScan --> runIPRScan getIPRScanColnames --> getIPRScanColNames getIPRScanColtypes --> getIPRScanColTypes

Could you double-check against my issue-specific notes + changes in the original issue #7?