Added Config for BROTHERHOBBYF405V2

[BrotherHobby]

Description

This pull request adds a new configuration file for BROTHERHOBBYF405V2.

• Added configs/BROTHERHOBBYF405V2/config.h which includes the necessary settings and parameters for BROTHERHOBBYF405V2.
• The configuration file is designed to optimize performance and ensure compatibility with the hardware.

Changes

• 1 file changed
• 111 insertions
• Created new file configs/BROTHERHOBBYF405V2/config.h

Testing

• Verified the functionality of the new configuration file with various test cases.
• Ensured compatibility with existing system components.

Please review the changes and merge if everything looks good.

[ot0tot]

I don't see how the F405 targets can work as-is, and the config.h is still invalid.

TIMER_PIN_MAP(3, PB9, 1, 0)\ No DMA assignment is possible for this pin.

The remaining issues from https://github.com/betaflight/config/pull/454 still stand.

[BrotherHobby]

I don't see how the F405 targets can work as-is, and the config.h is still invalid.

TIMER_PIN_MAP(3, PB9, 1, 0)\ No DMA assignment is possible for this pin.

The remaining issues from #454 still stand.

We found this issue and will rework the hardware, thanks!