Python wheels for 32-bit ARM (armv7l), or sdist so I can build myself

[m4-k131]

I use ai-edge-litert for TFLite inference on Raspberry Pi (CV firmware). It works well on Pi 4 (64-bit), but I’d like to keep supporting Pi 3 as well, which is 32-bit (armv7l). Right now the PyPI package only has wheels for x86_64, aarch64, Windows and macOS. No Linux armv7l. There’s also no sdist, so I can’t build from source and piwheels can’t either (they list it as "binary only").
Related to the 32-bit Android discussion in #3926: same idea, but for the Python package on Linux (e.g. Raspberry Pi 3). I’m not asking for full official support of 32-bit, I’d be fine with either official manylinux armv7l wheels or an sdist so that community builders (or I, eventually) could produce 32-bit wheels.
If there’s a reason 32-bit was dropped for the Python builds (e.g. build cost or maintenance), I’d be interested to hear it. Otherwise I’d really appreciate either wheels or a source distribution for armv7l.