add esp32c3 examples (#37) #216

Job	Run time
Check subtrees are up to date	4s
Check	14s
Build Examples	11s
ESP Examples (esp32c3-power-meter-mock, build, --release)	35s
Lints	24s
ESP Examples (esp32c3-power-meter-mock, build, --release --all-features)	34s
Semver Checks	2m 20s
Test Suite	43s
ESP Examples (esp32c3-power-meter-mock, fmt, --all -- --check --color always)	12s
ESP Examples (esp32c3-power-meter-mock, clippy, --all-features --workspace -- -D warnings)	36s
ESP Examples (esp32c3-sml-reader, build, --release)	44s
ESP Examples (esp32c3-sml-reader, build, --release --all-features)	51s
ESP Examples (esp32c3-sml-reader, fmt, --all -- --check --color always)	13s
ESP Examples (esp32c3-sml-reader, clippy, --all-features --workspace -- -D warnings)	50s
ESP Examples (esp32c3-sml-reader-async, build, --release)	38s
ESP Examples (esp32c3-sml-reader-async, build, --release --all-features)	37s
ESP Examples (esp32c3-sml-reader-async, fmt, --all -- --check --color always)	12s
ESP Examples (esp32c3-sml-reader-async, clippy, --all-features --workspace -- -D warnings)	37s
	10m 35s

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