1. Closes https://github.com/espressif/esp-idf/issues/10427
2: Rename ymbol names
3. support memory release in case that ESP_ALLOW_BSS_SEG_EXTERNAL_MEMORY is enabled
4. improve the implementation of memory release
Include external ram section in the linker template to process it
through linker script generation mechanism. This enables redirection of .bss section to external memory using linker fragments
libnet80211, libpp, libbt, liblwip: Redirect .bss through fragments