Add c3 env for rev. <3 (#18998)

* c3 env for rev <3
* no support for c3 rev <3

platformio_tasmota_cenv_sample.ini

@@ -46,6 +46,19 @@ build_flags                 = ${env:tasmota32_base.build_flags}
                               -DUSE_LVGL_OPENHASP
                               -DOTA_URL='""'
 
+;*** Tasmota ESP32-C3 version before ROM revision 3
+;*** Actual used Arduino/IDF does not support this old revisions
+;*** This build env is without any support, unexpected issues can happen
+;*** Includes only basic drivers to fit in smaller app partition
+[env:tasmota32c3-old]
+extends                 = env:tasmota32c3
+platform_packages       = framework-arduinoespressif32 @ https://github.com/tasmota/arduino-esp32/releases/download/2.0.9.20230531/framework-arduinoespressif32.zip
+build_flags             = ${env:tasmota32_base.build_flags}
+                          -DOTA_URL='""'
+; *** Do not use safe boot scheme, since safeboot is build with new core!!
+board_build.partitions  = partitions/esp32_partition_app1856k_fs320k.csv
+; Safeboot not used in this partition scheme -> an empty entry needed to overwrite the default setting
+board_upload.arduino.flash_extra_images =
 
 [env:tasmota32c3-bluetooth]
 extends                     = env:tasmota32c3