[pshaiCmd] Get Dynamic Trade Amount

Hey fellas!

This CC is based on the example I shared here: https://www.haasscripts.com/t/example-position-sizing-based-on-pre-determined-acceptable-loss-stop-loss-size/

Usage:

local acceptable_loss = 100 -- USDT
local entry_price = CurrentPrice().ask -- we buy the ask price
local stop_loss_price = SubPerc(entry_price)

local trade_amount = CC_GetDynamicTradeAmount(acceptable_loss, entry_price, stop_loss_price)
local margin_amount = CC_GetDynamicTradeAmount(acceptable_loss, entry_price, stop_loss_price, 'margin')
local notional_amount = CC_GetDynamicTradeAmount(acceptable_loss, entry_price, stop_loss_price, 'notional')