LAB15: Update from nuget to dotnet pack

[LuizMacedo]

Related Issue

Link related Github Issue 🢂 Fixes #516

Checklist

Mark completed with "x" between brackets, "[x]", or checking the box once the PR is created:

• [X] Has related GitHub Issue 💥 Create Issue 📝
• [X] Tested it
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Changes proposed in this pull request:

• Fixes the issue #516.
• Project name updated from EShopOnWeb to eShopOnWeb.