Feat : Get users name in profile page

[kanta1207]

Overview

Get user's name in Profile page.

Changes

• Add API client to get current user's id
• Add API client to get user's info by userId
• Display user's name in UI for testing purpose. (*UI will be implemented in the next task)

Review points

• Functionality of API client. This PR doesn't include any UI change to review.
• Readability of the code.

Notes

Both of (auth/me and users/{userId} has an issue, it's the same one with #255 I resolved it with temporally solutions.

Assignee Checklist:

• [x] The naming convention of the PR title is correct (See the comment at the top of this template)
• [x] The base branch is correct (See: Types of Branches)
• [x] The branch name follows the Branch Naming Conventions
• [x] The correct assignees and reviewers have been designated for this PR
• [x] The coding style follows the Coding Style Guide
• [x] All the related issues are associated with this PR
• [x] All criteria in the associated issues are met (please tick the checkboxes)
• [x] My changes do not generate new warnings or errors (especially in the console)

Reviewer Checklist:

• [x] Double-check the "Assignee Checklist"
• [ ] The code follows the generic best practices and our Coding Style Guide
• [ ] The code is well-commented and easy to understand
• [x] The UI changes accurately reflect the provided design

[kanta1207]

@nick-y-ito Thank you for the review! I addressed the issues you mentioned! Please have a look when you have a moment

[kanta1207]

@nick-y-ito Thank you for the review, and sorry for missing some points! I re-pushed my changes, please kindly take a look at them when you have a moment