Created typedefs for CoreAPI pointers

[gbenziv]

Closes #181

• Added typedef in dashboard
• Added typedef in employee management
• Added typedef in inventory
• Added typedef in login component

Pull Request Checklist

• [x] I have ensured that my commit message contains the Issue ID.
• [x] I have ensured that my commit message contains the feature/bugfix description.
• [ ] I have updated the documentation accordingly.
• [x] I have ensured my code follows the coding guidelines.
• [x] I have ran lint in my code locally prior to submission.
• [x] I have built my changes in local successfully.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.

[codecov[bot]]

Codecov Report

Merging #189 (0ebfbea) into master (30d3a67) will increase coverage by 4.59%. The diff coverage is 97.08%.

@@            Coverage Diff             @@
##           master     #189      +/-   ##
==========================================
+ Coverage   90.78%   95.37%   +4.59%     
==========================================
  Files          43       43              
  Lines         792      909     +117     
==========================================
+ Hits          719      867     +148     
+ Misses         73       42      -31     

Impacted Files	Coverage Δ
...ore/domain/customermgmt/customermgmtcontroller.hpp	100.00% <ø> (ø)
core/domain/dashboard/dashboardcontroller.hpp	100.00% <ø> (ø)
core/domain/employeemgmt/employeecontroller.hpp	100.00% <ø> (ø)
core/domain/inventory/inventorycontroller.hpp	100.00% <ø> (ø)
core/domain/userlogin/logincontroller.hpp	100.00% <ø> (ø)
core/domain/dashboard/dashboardcontroller.cpp	89.65% <66.66%> (ø)
core/domain/employeemgmt/employeecontroller.cpp	96.36% <66.66%> (ø)
core/domain/inventory/inventorycontroller.cpp	95.71% <66.66%> (ø)
core/domain/userlogin/logincontroller.cpp	92.85% <66.66%> (ø)
...ore/domain/customermgmt/customermgmtcontroller.cpp	96.25% <100.00%> (+68.75%)	:arrow_up:
... and 5 more

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