Feature/can 16 add fix for missing template

[m-o-leary]

Pull Request Checklist

• Read the contributing guidelines
• Tests pass
  • Tests pass locally on part of the code I have changed
• Raised the PR against the develop branch
  • There is no develop branch

Background

• This change is needed to decouple this repository with other internal SDK generation processes. When using this repository to generate an SDK for an internal/new project, the code breaks if there is not a template file for the new library. However, this repository is a public repository and therefore we may not be able to have templates included here initially. This change will add some logic to allow the process continue gracefully when a template does not exist

How were the changes implemented

• Added if/else blocks to both generate-local and generate-cicd to check if a description template exists, if it does, normal service is resumed. If it does not then ./generate/templates/description.mustache created with the following content:

  [INTERNAL] FINBOURNE Technology {{APPLICATION_NAME}} SDK
  

• Added a log message when no template is found:

  [INFO] No description template found for {{APPLICATION_NAME}} - if this is an external facing SDK - add ./generate/templates/description.{{APPLICATION_NAME}}.mustache to this project ASAP
  

  Example:

  [INFO] No description template found for my_new_lib - if this is an external facing SDK - add ./generate/templates/description.my_new_lib.mustache to this project ASAP
  

How Has This Been Tested?

• Set APPLICATION_NAME environment variable to my_new_lib and ran generate-cicd and generate-local before and after making this change. Errors before, no error after.

How this can be tested

1. Checkout branch
2. Set the APPLICATION_NAME environment variable to my_new_lib (export APPLICATION_NAME=my_new_lib) - this will ensure that there is no generate/templates/description.my_new_lib.mustache found to test the new logic.
3. Run just generate-local and observe the warning message in the logs:

   ...
   [INFO] No description template found for my_new_lib - if this is an external facing SDK - add ./generate/templates/description.my_new_lib.mustache to this project ASAP
   ...

4. Confirm generate/.output/README.md file should contain a description that reads "[INTERNAL] FINBOURNE Technology my_new_lib SDK" at the top
5. Create the template file: echo "My new Lib - FINBOURNE TECHNOLOGY" > generate/templates/description.my_new_lib.mustache
6. Run just generate-local and observe no warning message in the logs.
7. Confirm the generate/.output/README.md file contains the text "My new Lib - FINBOURNE TECHNOLOGY"