chore: import upstream snapshot with attribution

.help/docs/operators/lib/string/datetime/DateTimeToFloat.md

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+# DateTimeToFloat
+
+*in [Lib.string.datetime](README.md)*
+
+Converts a DateTime into different float values like normalized time of day (between 0 ... 1), day of the year, etc.
+
+## Input Parameters
+| Name (Relevancy & Type) | Description |
+|---|---|
+| **Value** (DateTime Required) | — |
+| **OutputMapping** (Int32) | — |
+| **HourOffset** (Single) | — |
+
+## Outputs
+| Name | Type |
+|---|---|
+| **Output** | System.Single |
+