fix: base64encode error warning, extraction of common logic into a single function

[retrogtx]

what this pr does

1. Extraction of common block setup logic into a setupBlock function.
2. Creation of helper functions createFormBlock and setHelpString to handle common operations.
3. Refactoring of the TurtleHeapBlock class as an example of the new structure, making the constructor more concise and easier to understand.
4. Implementation of an array of block classes and use of forEach to set them up, which is more maintainable than calling setup on each class individually.

AlsO fixed a base64encode error by simply adding a // eslint-disable-next-line no-undef

[walterbender]

This looks good. Maybe finish all the blocks in this Ensemble and then we can make a plan to do the other block definitions.

[retrogtx]

long time no see!

sure will try to do that

[walterbender]

What is this file?

[retrogtx]

looks like I added an extra line at the top by mistake