Thanks to@jpoikela foresp8266/Arduino#9264

…ke, clean up P.IO build hardcoded defines (#3049)* Update to Pico-SDK 2.2.0 releaseDoesn't seem to have many additions since the develop branch we were using,but this one is nice and official and tagged.* Add LIB_PICO_MULTICORE to libpico buildFixes#3058* Clean up some unused param warnings* Fix olimex XL/XXL RP2350A redefinition* Clean up SDK defines in IDE builds* Build LWIP at app compile time, no need for multiWe needed about 6 copies of the LWIP/BT library for each CPU when theLWIP library was built as part of the SDK libpico.Remove LWIP from the SDK builds and replace it with the actual LWIPsource (linked via `#include`) so we can adjust for IPv4/IPv^/32K/16Kat runtime.  Shrinks download size of a release significantly.Still need separate LWIP-BT library because the CYW43 driver isdifferent when BT is enabled.Update and clean up the libpico CMakefile and common platform_def.txtLink to config includes, don't copy, where possible* Platform.IO build fixes* Use platform_def files for p.io builds* Allow for no PIN_LED for board variants* Update Mozilla CCADB URL in CertStore exampleThanks to@jpoikela foresp8266/Arduino#9264* Update TZ.h from ESP8266 repoUse newer script which parses local tzdata files* Re-enable BOOT2.S compiles in libpicoNo actual changes to output boot2 files, but if they ever do update we'llcatch it.* Update LittleFS to latest release 2.11.1