Simplify switchbot config flow

[bdraco]

Proposed change

• Do not ask for a password if the device does not need one

• Confirm discovery right away if no more information is needed

• Generate the name from the friendly device type and short address

• Allow changing the name by adjusting the config entry title

• Confirm only the device if only one device is found

Upstream change to provide the friendly names : https://github.com/Danielhiversen/pySwitchbot/compare/0.17.3...0.18.4

Type of change

• [x] Dependency upgrade
• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New integration (thank you!)
• [ ] New feature (which adds functionality to an existing integration)
• [ ] Deprecation (breaking change to happen in the future)
• [ ] Breaking change (fix/feature causing existing functionality to break)
• [x] Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #76225
• This PR is related to issue:
• Link to documentation pull request:

Checklist

• [x] The code change is tested and works locally.
• [ ] Local tests pass. Your PR cannot be merged unless tests pass
• [ ] There is no commented out code in this PR.
• [ ] I have followed the development checklist
• [ ] The code has been formatted using Black (black --fast homeassistant tests)
• [x] Tests have been added to verify that the new code works.

If user exposed functionality or configuration variables are added/changed:

• [ ] Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• [ ] The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• [ ] New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• [ ] For the updated dependencies - a link to the changelog, or at minimum a diff between library versions is added to the PR description.
• [ ] Untested files have been added to .coveragerc.

The integration reached or maintains the following Integration Quality Scale:

• [ ] No score or internal
• [ ] 🥈 Silver
• [ ] 🥇 Gold
• [ ] 🏆 Platinum

To help with the load of incoming pull requests:

• [ ] I have reviewed two other open pull requests in this repository.

[probot-home-assistant[bot]]

Hey there @danielhiversen, @renierm26, @murtas, @eloston, mind taking a look at this pull request as it has been labeled with an integration (switchbot) you are listed as a code owner for? Thanks! _{^{(message by CodeOwnersMention)}}

[bdraco]

Thanks