Merge branch 'feature/update_qcloud_core_to_965ecb9' into 'master'

feat(core): update qcloud core version to 965ecb9

See merge request application/esp-at!1128

Merge branch 'docs/update_at_commands_description' into 'master'

docs: update AT commands description

See merge request application/esp-at!1029

Merge branch 'feature/update_esp8266_fw_version' into 'release/v2.2.0…

….0_esp8266'

feat: update esp8266-at firmware version and docs

See merge request application/esp-at!907

Merge branch 'docs/update_esp32_at_binary_list' into 'release/v2.2.0.…

…0_esp32'

docs: esp32 at binary list add v2.2.0.0 firmware

See merge request application/esp-at!877

Merge branch 'feature/update_at_core_version_esp8266' into 'master'

feat: update esp8266 firmware version to v2.2.0 and at core version to b097cdfc

See merge request application/esp-at!837

Merge branch 'feature/update_at_core' into 'master'

feat: update at core verison to 90458f01

See merge request application/esp-at!840

Merge branch 'bugfix/ota_over_ssl_fail' into 'master'

fix: OTA over SSL fail when the version was specified

See merge request application/esp-at!567

Merge branch 'feature/esp8266_update_bin_version' into 'release/v2.1.…

…0.0_esp8266'

feat: Update bin version v2.1.0

See merge request application/esp-at!536

Merge branch 'docs/correct_firmware_link' into 'release/v2.1.0.0_esp32'

docs: Correct the error about the firmware link

See merge request application/esp-at!537

Merge branch 'feature/update_esp32_at_core' into 'release/v2.1.0.0_es…

…p32'

feat: update at core version to 10d22155

See merge request application/esp-at!514