[FDS-2294] Prevent including project name twice in walked path

[BryanFauble]

Problem:

1. When the project structure was being walked the name of the project was being included twice: schematic - main/schematic - main/DataTypeX/Sample_A.txt
2. Lots of small issues flagged by sonar

Solution:

1. Add in a small check to determine if the project name is already being included in the directory structure, and not include the duplicated data if it's the case. I was not certain if I could totally remove adding the project name manually, so that is why I made the check in this way.

Testing:

1. I verified I could run the tests in question around this logic (Note: This does not contain all of the tests noted in the jira, just a few):
   

[thomasyu888]

🤖 LGTM - but will leave it to FAIR for final review

[linglp]

@thomasyu888 @BryanFauble Thank you for the PR. It looks good to me overall! I appreciate the efforts of setting up global variables and remove the unnecessary fixtures too! I just left a small comment to modify a unit test so that the newly introduce logic can get covered. I also tested it /manifest/generate endpoint using my own test projects. That looks good too. Thanks again.

[sonarcloud]

Quality Gate failed

Failed conditions
B Reliability Rating on New Code (required ≥ A)

See analysis details on SonarCloud

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[linglp]

Thanks @BryanFauble! LGTM