* Clean up and re-organize `lib.rs` a bit (sorry)
* Add configuration validation, some other refactoring/improvements
* Add a built-in range validator, re-document the `generate_config` function
* Update build scripts to reflect new configuration API
* Initial esp-config poc, replacing the place-spi-driver-in-ram feature
* Allow documentation generation for configuration options
* add `Value::Number` and a macro to parse
* Add Value::String and replace esp-wifi's config
* repo maint
* make bool parsing stricter and number parsing more flexible
* use hand rolled const str to int
* Collect unknown config options
* friendly errors
* also batch invalid values
* dump msrv to 1.79
* Mention perf boost from disabling logging
* review suggestions
* output selected config
* changelogs and migration guides
* review feedback
* avoid multiple case conversions where possible
* refactor generate, fix bug, add full test
* run host tests in CI
* add more esp-config tests
* review comments
* add cargo env workaround
