Created a AdminPageLayout component for admin pages
Moved the AdminPageLayout, AdminSideBar, AdminDashboard, RecentOrderCard components into the AdminPanel directory
Committed all the requested changes as in #67
Essential Checklist
[x] The PR title starts with "Fix #bugnum: ", followed by a short, clear summary of the changes. (If this PR fixes part of an issue, prefix the title with "Fix part of #bugnum: ...".)
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[x] The PR is made from a branch that's not called "main/master".
Overview
Essential Checklist