Conditional cicd npm version major

[Reikyo]

Allowing for NPM major version to only be incremented on changes to src/templates/, using the paths-filter custom action to act at the step-level rather than the full workflow-level. This will then allow for PR 8(2023-03-15) to be finalised, as also seen in the issue board here and here.

[howaskew]

@Reikyo Looks like the readme will need updating also. And though not mentioned in Contribution as it is in other repos, you could follow the conventional commits approach.

[Reikyo]

@howaskew How would you suggest the readme to be updated? This change complies with what's already stated in the Releasing section of the readme.

In fact, checking that section has prompted an additional change which is needed. This commit as it stands only checks for changes to src/templates/, but it should also check for changes to src/static/. From the readme wording, it's actually unclear if it should also check for changes to src/templateRenderer/, I'm assuming yes but would be good to have this confirmed.

[howaskew]

@Reikyo Just that last line:

NOTE: All commits to master currently trigger a major version bump in CI by default.

That's no longer the case with this fix?

[Reikyo]

@howaskew Yes good spot, thanks for flagging.

[Reikyo]

@howaskew I've updated the trigger condition to work on src/static/ as well as src/templates/, and have adjusted the readme to reflect the changes.