Feature: Wrap Block

[ksraj123]

Implements #2750

The block is made a clamp block to avoid ambiguity as the wrapping tendency is also affected by the turtle wrapping that could be set in the toolbar globally.

• Basic functionality of wrap block,
  wrapping is on globally (from the toolbar) but if the wrapping is turned off in the wrap block then the statements within it don't wrap

  wrap_block_basic_functionality.mov

• In the demonstration below, the horizontal rectangle is affected by global wrapping, vertical rectangle is affected by the settings of wrap block.

  wrap_block_global_wrap_on.mov

• Wrap block inside fill
  Wrapping should not happen in the middle of fill, even if wrapping is turned on in the wrap block inside fill then wrapping does not happen

  global_on_local_on_wrap_inside_fill.mov

• Nested Wrapping blocks

  nested_wrap_blocks.mov

[ksraj123]

@meganindya can you please have a look at this?. Thanks

[walterbender]

The functionality is great. But there are several issues:
(1) The wrap block should be at the end of the palette, not the beginning of the palette
(2) When Wrap == On, a NO INPUT ARG error message appears on the screen. Not sure why.

[walterbender]

Also, please create help artwork for the help block.

[ksraj123]

@walterbender wrap block moved to the bottom of the palette, but I could not reproduce the with No INPUT ARG error message appearing when Wrap == on. Cloud you please provide some more details. Thanks

[walterbender]

Here is what I am seeing:

[walterbender]

We still need the help artwork... we can do that separately