[Feat] Remove residents from events

[gordonlzy]

Remove residents from an event : exclude

Remove multiple residents from an event based on the information given(name or room number), a resident is only expected to be given one piece of information.

Format: exclude index r/INFORMATION INFORMATION, ...

• The information given has to be all rooms or all names of residents
• The given resident has to in the event to be removed
• The information inputted is case-insensitive
• Each piece of information is separated by a comma
• If one or more of the given information is invalid, an error message is outputted and none of the residents are added to the event

Examples:

• exclude 1 i/A101 removes the resident who stays in room A101 to the first event in the address book
• exclude 2 i/A101, A102, A103 removes the residents who stay in rooms A101, A102 and A103 to the second event in the address book
• exclude 3 r/John Doe removes John Doe to the third event in the address book
• exclude 4 r/John Doe, Jane Doe removes John Doe and Jane Doe to the fourth event in the address book