Optimization flags for all NRF52 targets to reduce code size (#8854)

* changes of variants/nrf52840/nrf52.ini and variants/nrf52840/rak4631/platformio.ini

* try for nrf52 size reduction, faketec exclude unused radios and meshlink refactor

* can't exclude LR11X0 as in schematic there's option for LR1121

* remove -Map flag and -Wl

* removed spaces causing error

---------

Co-authored-by: macvenez <macvenez@gmail.com>

variants/nrf52840/nrf52.ini

@@ -11,7 +11,7 @@ platform_packages =
   ; Don't renovate toolchain-gccarmnoneeabi
   platformio/toolchain-gccarmnoneeabi@~1.90301.0
 
-build_type = debug
+build_type = release
 build_flags =
   -include variants/nrf52840/cpp_overrides/lfs_util.h
   ${arduino_base.build_flags}
@@ -21,6 +21,17 @@ build_flags =
   -DLFS_NO_ASSERT                      ; Disable LFS assertions , see https://github.com/meshtastic/firmware/pull/3818
   -DMESHTASTIC_EXCLUDE_AUDIO=1
   -DMESHTASTIC_EXCLUDE_PAXCOUNTER=1
+  -Os
+build_unflags =
+  -Ofast
+  -Og
+  -ggdb3
+  -ggdb2
+  -g3
+  -g2
+  -g
+  -g1
+  -g0
 
 build_src_filter = 
   ${arduino_base.build_src_filter} -<platform/esp32/> -<platform/stm32wl> -<nimble/> -<mesh/wifi/> -<mesh/api/> -<mesh/http/> -<modules/esp32> -<platform/rp2xx0> -<mesh/eth/> -<mesh/raspihttp> -<serialization/>