RT-Thread-packages/esp-idf @ v4.0.4

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Angus Gratton 97c0204ab9 examples: Move idf_as_lib sdkconfig file to the project directory		5 gadi atpakaļ
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idf_as_lib	97c0204ab9 examples: Move idf_as_lib sdkconfig file to the project directory	5 gadi atpakaļ
import_lib	b1bb90a596 Merge branch 'bugfix/partition_tables_update_note' into 'master'	6 gadi atpakaļ
import_prebuilt	8c23bb4aa9 examples: add import prebuilt example	6 gadi atpakaļ