Add SupplierCommand Class

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 83.45865% with 22 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...seedu/address/model/supplier/UniquePersonList.java	86.95%	4 Missing and 2 partials :warning:
src/main/java/seedu/address/ui/PersonCard.java	0.00%	6 Missing :warning:
...rc/main/java/seedu/address/ui/PersonListPanel.java	0.00%	5 Missing :warning:
.../java/seedu/address/model/util/SampleDataUtil.java	0.00%	3 Missing :warning:
...java/seedu/address/logic/commands/EditCommand.java	92.85%	0 Missing and 1 partial :warning:
.../java/seedu/address/model/product/ProductName.java	0.00%	1 Missing :warning:

Files with missing lines	Coverage Δ	Complexity Δ
...rc/main/java/seedu/address/logic/LogicManager.java	77.27% <ø> (ø)	3.00 <0.00> (ø)
src/main/java/seedu/address/logic/Messages.java	73.68% <100.00%> (ø)	3.00 <0.00> (ø)
...edu/address/logic/commands/AddSupplierCommand.java	100.00% <100.00%> (ø)	8.00 <2.00> (?)
...va/seedu/address/logic/commands/DeleteCommand.java	100.00% <100.00%> (ø)	7.00 <0.00> (ø)
...java/seedu/address/logic/commands/FindCommand.java	100.00% <ø> (ø)	6.00 <0.00> (ø)
...address/logic/parser/AddSupplierCommandParser.java	100.00% <100.00%> (ø)	5.00 <1.00> (?)
.../seedu/address/logic/parser/AddressBookParser.java	90.47% <100.00%> (ø)	12.00 <0.00> (ø)
.../seedu/address/logic/parser/FindCommandParser.java	100.00% <ø> (ø)	3.00 <0.00> (ø)
...in/java/seedu/address/logic/parser/ParserUtil.java	85.36% <ø> (ø)	14.00 <0.00> (ø)
src/main/java/seedu/address/model/AddressBook.java	83.33% <100.00%> (ø)	11.00 <3.00> (ø)
... and 18 more