Add tactile_shovel1 dataset to package

[rudeboybert]

@smetzer180 found in 9.6 EXAMPLE: One proportion we say the tactile_shovel1 dataframe is included in moderndive package, but it isn't (we manually create it). At the very least in short term show code that manually creates this, in medium term add to moderndive package.

[ismayc]

Seems simple enough to just add it to the package, right?

[rudeboybert]

yeah, will do later. However, I'd rather have a dataframe name that didn't have a number appended and didn't want to go thru the agony of choosing a variable name right now

[rudeboybert]

Added to moderndive package here and renamed as bowl_sample_1.