Add more flexibility for minimum ground speed

[MrD-RC]

This PR adds more flexibility to minimum ground speed. Access has been added to the programming framework for retrieval and override. An example use would be setting the min ground speed to be x km/h above the wind speed.

• Added overriding min ground speed to the programming framework.
• Added reading min ground speed to the programming framework.
• Updated nav functions to get the min ground speed via the programming framework. This handles if the override is enabled or not.
• Added min ground speed element to the OSD. This involved re-formatting osdFormatVelocityStr to take a osd_speedTypes_e value. Instead or adding another Boolean to define speed types. Moved Airspeed variants in to the function too. I think it's a neater and more futureproof solution.

Requires Configurator iNavFlight/inav-configurator#2382

Todo

• Add getting wind speed to programming framework
• Add getting wind direction to programming framework
• Configurator side
• Test

[sensei-hacker]

If someone could please test this, that would be great.
In particular if you can test any weird cases you might think of, any way it might break.

[MrD-RC]

I made a couple of updates and have tested. All seems fine in HITL. But welcome peer review.

Here is the programming that I used

Unfortunately my choice of 15m/s (54kmh) and a 556 cm/s (20kmh) increase over horizontal wind speed mad the resulting requested ground speeds identical. However from the programming tab. It's obvious that the two different methods are being used. There is also a mistake in the programming. LC 9 & 10 should both be active always. That explains the glitches in the requested horizontal wind speed + 20kmh in the video.

HITL test video

[Copilot]

Pull Request Overview

This PR adds flexibility to minimum ground speed configuration by enabling programming framework access for both retrieval and override functionality. The changes allow users to dynamically adjust minimum ground speed (e.g., setting it relative to wind speed) and display it on the OSD.

• Added programming framework support for overriding and reading minimum ground speed
• Enhanced OSD velocity formatting to support different speed types including minimum ground speed
• Added wind speed and direction operands to the programming framework

Reviewed Changes

Copilot reviewed 9 out of 9 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/main/programming/logic_condition.h	Added new operands and override operation for minimum ground speed
src/main/programming/logic_condition.c	Implemented minimum ground speed override logic and wind estimation operands
src/main/navigation/navigation_fixedwing.c	Updated to use programming framework for minimum ground speed retrieval
src/main/io/osd.h	Added new OSD element and speed type enumeration
src/main/io/osd.c	Refactored velocity formatting and added minimum ground speed display
src/main/drivers/osd_symbols.h	Added minimum ground speed symbol and fixed duplicate ADSB definition
src/main/common/maths.h	Added KMH to m/s conversion macro
docs/Programming Framework.md	Documented new programming framework features
docs/OSD.md	Added minimum ground speed OSD element documentation

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[Jetrell]

If someone could please test this, that would be great. In particular if you can test any weird cases you might think of, any way it might break.

From the best that I could tell when flying in blustery wind conditions, in order to trigger an event. It appears to be working as it was designed to, when looking back over the OSD footage.
Great addition with the wind direction and horizontal wind speed in the IPF @MrD-RC