add_moving_average: Add Moving Average for an Arbitrary Number of Intervals
In konradedgar/KEmisc: Collection of Random Convenience and Utility Function

The functions adds moving average for an arbitrary number of intervals. The data can be returned sorted or according to the original order.

add_moving_average(
  .data,
  sort_cols,
  val,
  intervals = 2,
  res_val = "{{val}}_mavg",
  restore_order = FALSE
)

`.data`	A tibble or data frame.
`sort_cols`	Columns used for sorting passed in a manner consistent with `arrange`
`val`	Column used to calculate moving average passed as bare column name or a character string.
`intervals`	A number of intervals for moving average.
`res_val`	Resulting moving average, defaults to name of `val` suffixed with `_mavg`.
`restore_order`	A logical, defaults to `FALSE` if `TRUE` it will restore original data order.