feature updates for tgocassisstitch (#5162)

* Squashing things

added suffix and prefix capabilities in tgocassisstitch

    addresses #5125, this allows the user to optionally use either the prefix or
    suffix option when stitching frames together, just use OUTPUTSUFFIX instead
    of OUTPUTPREFIX to use it.

minor fixes

typo

more typos

close to done, one error left

    need to figure out a replacement for ui.IsOptionSet as that is not actually
    a function. I need another way to test CLLI args.

final fixes to implement ui changes

fixed

    now employs a boolean flag to decide if the name parsed with out is a suffix
    or prefix, it defaults to a prefix.

adding some tests to confirm output runs as expected.

* adding to changelog

* modified to allow prefix, suffix, both, or neither for better extensibility

    it also maintains original value names so older scripts and pipelines will
    retain functionality.

adds another optional arg, cubename

    lets the user specify an optional cubename parameter which replaces the
    timestamp style naming for the output stitched cube. If the parameter is not
    given it defaults to the timestamp style naming convention for retaining
    existing functionality.

* added details to changelog

removed debugging code

added changelog notes to xml for tgocassisstitch

* typo in changelog

* fixes from review

added cubename argument logic

typo in else statement

* modifying tests

removed faulty/old tests based on makefiles

fixed single and multi frame tests for tgocassisstitch

remaining tests fixed, one on EFS to check with jenkins.

removed debug lines

updated to remove nil randomly appearing in tests

modified first stitch test to use fallback naming behaviour.

* simplified some logic and removed repeat lines in different logic branches

removing redundant lines from 8.0 release

addresses prefix and filename convention topical issues

* resolving changelog merge conflicts (I think)

added details to changelog

small typo in link

* removed some dashes in tests and replaced a mistaken default filename

* fixing the changleog resolves

* modified to allow prefix, suffix, both, or neither for better extensibility

    it also maintains original value names so older scripts and pipelines will
    retain functionality.

* added details to changelog

changelog fixes

removed typo

* small test changes

* cleaning up git artifacts left by squashing

* changelog resolves