1. Likely, as your employer will be required to fill out the employer's return which will trigger an individual tax return to be sent to you.
2. You are likely to have your income considered (i.e. chargeable) for HK tax. If you earn over HK$108,000 in a tax year, 1 April to following 31 March, then yes you need to pay tax. However, if you are only here for one year and if you are coming now or soon, then your tax is likely to be lower than if you were permanently working here and in fact, you may not need to pay tax until you leave when you need to obtain tax clearance. Possessing a HKID Card is not relevant to salary tax liability.
3. The only information you need to provide is usually what is stated in your employer's return which states all payments made to you as an employee for services rendered. Bank details and so forth are not required unless requested, typically if you are making a tax exemption application. If you are rendering employment services in Hong Kong (and typically this covers employment training provided by the employer) then yes, your payments would be related to employment services rendered in Hong Kong. Depending on whether your employment is deemed Hong Kong sourced, you may be eligible to make a days in days out exemption claim which means you only pay tax on the time you spend in Hong Kong.