Branch reminder edit

[Harithhh06]

Things done

• Implement edit feature for reminder
• Updated error message for add reminder

close #190

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 70 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...s/logic/commands/reminder/EditReminderCommand.java	0.00%	53 Missing ⚠️
...gic/parser/reminder/EditReminderCommandParser.java	0.00%	17 Missing ⚠️

Files with missing lines	Coverage Δ	Complexity Δ
...ss/logic/commands/reminder/AddReminderCommand.java	91.66% <ø> (+91.66%)	8.00 <0.00> (+8.00)
...gic/parser/reminder/EditReminderCommandParser.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...s/logic/commands/reminder/EditReminderCommand.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)

... and 11 files with indirect coverage changes

[L-rrrr]

Clear structure of edit reminder command!

[L-rrrr]

Good!