Function truncateStringInTheMiddle

truncateStringInTheMiddle(
    str: string,
    strPositionStart: number,
    strPositionEnd: number,
): string
Truncates a string in the middle by replacing the middle portion with an ellipsis.

This function preserves the beginning and ending portions of the string while replacing the middle section with "..." when the string exceeds a certain length.
Parameters
- str: string
  The original string to truncate
- strPositionStart: number
  Number of characters to preserve from the beginning
- strPositionEnd: number
  Number of characters to preserve from the end
Returns string
The truncated string or the original if no truncation is needed
Example
```
// Truncate an Ethereum address
truncateStringInTheMiddle("0x1234567890abcdef1234567890abcdef12345678", 8, 6);
// Returns: "0x123456...345678"
```
- Defined in src/utils/strings.ts:19