trying to fix #2343
*** [.pio\build\$PIOENV\firmware.bin] TypeError
`expected str, bytes or os.PathLike object, not Dir' trying to evaluate `${__get_flash_size(__env__)}'

as it turns out, PIO platform internals (sometimes) did not use the correct ldscript path

Add support for BME680 using libalgobsec proprietary algorithms for precise Indoor Air Quality (IAQ) measurement. Unlike traditional CO2 sensors - and good ones are expensive - it measures nearly all VOCs compounds in the air (plus other gases) and compensates those measurements with its built-in temperature and humidity sensors to determine indoor air quality.

Co-authored-by: Max Prokhorov <prokhorov.max@outlook.com>

* utils/version: use git description token as version, add memoization

* pio: move extra scripts to a separate directory

* pio: add -DAPP_REVISION=... as local build flag