Fix strByteLength with emojis

[Bnaya]

strByteLength retunes wrong size for string with emojis (too big)

objectbuffer/src/internal/utils.ts

Lines 69 to 82 in ab8ba96

	/**
	* Incorrect length (too big) for emojis
	* @param str
	*/
	export function strByteLength(str: string) {
	let s = str.length;
	for (let i = str.length - 1; i >= 0; i--) {
	const code = str.charCodeAt(i);
	if (code > 0x7f && code <= 0x7ff) s++;
	else if (code > 0x7ff && code <= 0xffff) s += 2;
	}
	return s;
	}

The output length needs to be compatible with the output of:

objectbuffer/src/internal/stringEncodeInto.ts

Line 4 in 4dc8259

export function stringEncodeInto(uint8: Uint8Array, from: number, str: string) {

Example for failing test:
#85