chore: add fswap and fbridge swagger settings in swagger config (backport #371)

[mergify]

Description

• add fswap and fbridge swagger settings in swagger config

Motivation and context

• The queries of fswap and fbridge module are not displayed in swagger.

How has this been tested?

1. make install
2. set default single node setting. ./init_single.sh
3. change app.toml setting for enable swagger. enable and swagger of [api] section set true.
4. fnsad start
5. view http://localhost:1317/swagger/

Screenshots (if appropriate):

Checklist:

• I followed the contributing guidelines and code of conduct.
• I have added a relevant changelog to CHANGELOG.md
• I have added tests to cover my changes.
• I have updated the documentation accordingly.

---

This is an automatic backport of pull request #371 done by [Mergify](https://mergify.com).

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

❗ No coverage uploaded for pull request base (release/v4.0.x@dc156dc). Click here to learn what that means.

Additional details and impacted files

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