[CL]: Abstract priceToTick loop to helper function

[czarcas7ic]

Background

When computing PriceToTick, we currently loop through exponents (incrementing or decrementing depending on if the desired price is above or below 1) until we reach the first exponent that is greater than the desired price:

osmosis/x/concentrated-liquidity/internal/math/tick.go

Lines 124 to 143 in 00c430b

	if price.GT(sdk.OneDec()) {
	for currentPrice.LT(price) {
	currentAdditiveIncrementInTicks = powTenBigDec(exponentAtCurrentTick)
	maxPriceForCurrentAdditiveIncrementInTicks := osmomath.BigDecFromSDKDec(geometricExponentIncrementDistanceInTicks).Mul(currentAdditiveIncrementInTicks)
	currentPrice = currentPrice.Add(maxPriceForCurrentAdditiveIncrementInTicks.SDKDec())
	exponentAtCurrentTick = exponentAtCurrentTick.Add(sdk.OneInt())
	ticksPassed = ticksPassed.Add(geometricExponentIncrementDistanceInTicks.TruncateInt())
	}
	} else {
	// We must decrement the exponentAtCurrentTick by one when traversing negative ticks in order to constantly step up in precision when going further down in ticks
	// Otherwise, from tick 0 to tick -(geometricExponentIncrementDistanceInTicks), we would use the same exponent as the exponentAtPriceOne
	exponentAtCurrentTick := exponentAtPriceOne.Sub(sdk.OneInt())
	for currentPrice.GT(price) {
	currentAdditiveIncrementInTicks = powTenBigDec(exponentAtCurrentTick)
	maxPriceForCurrentAdditiveIncrementInTicks := osmomath.BigDecFromSDKDec(geometricExponentIncrementDistanceInTicks).Mul(currentAdditiveIncrementInTicks)
	currentPrice = currentPrice.Sub(maxPriceForCurrentAdditiveIncrementInTicks.SDKDec())
	exponentAtCurrentTick = exponentAtCurrentTick.Sub(sdk.OneInt())
	ticksPassed = ticksPassed.Sub(geometricExponentIncrementDistanceInTicks.TruncateInt())
	}
	}

This should be abstracted into a helper function with tests.

#3874 (comment)

Suggested Design

Abstract the logic into a helper function located within tick.go.

Acceptance Criteria

• Logic is abstracted into a helper function
• That helper function is well tested with gotests