Rename eep -> partitions.bin & hex -> bin (#4143)

This is in line with the
[arduino platform specification](https://arduino.github.io/arduino-cli/platform-specification/#recipes-for-extraction-of-executable-files-and-other-binary-data)
specifying that the file extension after recipe.objcopy is arbitrary and
that the AVR platform uses `eep` & `hex`, while the esp32 platform seems
to have file extensions `partition.bin` & `bin`

platform.txt

@@ -86,14 +86,14 @@ recipe.ar.pattern="{compiler.path}{compiler.ar.cmd}" {compiler.ar.flags} {compil
 ## Combine gc-sections, archives, and objects
 recipe.c.combine.pattern="{compiler.path}{compiler.c.elf.cmd}" {compiler.c.elf.flags} {compiler.c.elf.extra_flags} {compiler.libraries.ldflags} -Wl,--start-group {object_files} "{archive_file_path}" {compiler.c.elf.libs} -Wl,--end-group -Wl,-EL -o "{build.path}/{build.project_name}.elf"
 
-## Create eeprom
-recipe.objcopy.eep.pattern={tools.gen_esp32part.cmd} -q "{build.path}/partitions.csv" "{build.path}/{build.project_name}.partitions.bin"
+## Create partitions.bin
+recipe.objcopy.partitions.bin.pattern={tools.gen_esp32part.cmd} -q "{build.path}/partitions.csv" "{build.path}/{build.project_name}.partitions.bin"
 
-## Create hex
-recipe.objcopy.hex.pattern="{tools.esptool_py.path}/{tools.esptool_py.cmd}" --chip esp32 elf2image --flash_mode "{build.flash_mode}" --flash_freq "{build.flash_freq}" --flash_size "{build.flash_size}" -o "{build.path}/{build.project_name}.bin" "{build.path}/{build.project_name}.elf"
-recipe.objcopy.hex.pattern.linux=python "{tools.esptool_py.path}/{tools.esptool_py.cmd}" --chip esp32 elf2image --flash_mode "{build.flash_mode}" --flash_freq "{build.flash_freq}" --flash_size "{build.flash_size}" -o "{build.path}/{build.project_name}.bin" "{build.path}/{build.project_name}.elf"
+## Create bin
+recipe.objcopy.bin.pattern="{tools.esptool_py.path}/{tools.esptool_py.cmd}" --chip esp32 elf2image --flash_mode "{build.flash_mode}" --flash_freq "{build.flash_freq}" --flash_size "{build.flash_size}" -o "{build.path}/{build.project_name}.bin" "{build.path}/{build.project_name}.elf"
+recipe.objcopy.bin.pattern.linux=python "{tools.esptool_py.path}/{tools.esptool_py.cmd}" --chip esp32 elf2image --flash_mode "{build.flash_mode}" --flash_freq "{build.flash_freq}" --flash_size "{build.flash_size}" -o "{build.path}/{build.project_name}.bin" "{build.path}/{build.project_name}.elf"
 
-## Save hex
+## Save bin
 recipe.output.tmp_file={build.project_name}.bin
 recipe.output.save_file={build.project_name}.{build.variant}.bin