Pseudo Anonymous Identity for users while posting and answering to questions

## Is your feature request related to a problem? Please describe
**Pseduo Anonymity** encourages users to ask question, raise concerns which they can't ask publicly due to risk of rising that question. And Same applies for answering to the question. Even though community members know what they have to do. They won't/can't do it considering risk

this product is used By Hr professionals for building organization culture, making employees help each other. For cases like Abuse, discrimination in any form of nature or even it might be related to some sensitive events where people are shy to ask.

## Describe the solution you'd like
Levels.FYI solves problem of Pseudo anonymous Identity in their platform. Checkout their community section https://www.levels.fyi/community.
while user creation, user will option for alias name. they can input that or use system generated names. while they are participating in community it provides option for toggling their identity levels.

if user with to identify them self profile hyperlink will work. else link would be disabled

## Describe alternatives you've considered
users might/can need create fake accounts for Pseudo anonymous Identity. Fake accounts can lead all together to a different problem. when org take actions of fake accounts users who have it them loose their anonymous purpose

まず、提案されているエイリアスとアイデンティティ切り替えの動作を明示的な要件に落とし込み、プロフィールリンクを利用できるタイミングと、投稿および回答がどのように表示されるべきかを含めます。ファイル、テスト、実装のエントリーポイントが特定されていないため、最初の変更を見積もる前に、影響を受けるユーザーフローとコミュニティフローをメンテナーと定義してください。

索引モデルが issue の本文から書いたものです。