Function nest

nest<T extends NonNullable<Encodable>>(
F: Constructor<T, []> & Decodable<T>,
overrides?: Partial<StructFieldType<T>>,
): StructFieldType<T>
Turn a TLV class into a field type, where the TLV is nested inside the field.
Type Parameters
- T extends NonNullable<Encodable>
Parameters
- F: Constructor<T, []> & Decodable<T>
- overrides: Partial<StructFieldType<T>> = {}
Returns StructFieldType<T>
Example
Given this structure:
```
Outer = OUTER-TYPE TLV-LENGTH Middle
Middle = MIDDLE-TYPE TLV-LENGTH Inner
Inner = INNER-TYPE TLV-LENGTH INNER-VALUE
```
You can define the Outer builder:
```
const buildOuter = new StructBuilder("Outer", TT.Outer)
  .add(TT.Middle, "inner", StructFieldType.nest(Inner));
```
Inner type does not have to encode itself as a TLV. Its encoding result appears as the TLV-VALUE of the "middle" field TLV.
- Defined in pkg/tlv/src/struct-field.ts:110