Add LinkieTransportV2 and basic IOT.IPCAMERA support (#1270)

Add LinkieTransportV2 transport used by kasa cameras and a basic
implementation for IOT.IPCAMERA (kasacam) devices.

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Co-authored-by: Zach Price <pricezt@ornl.gov>
Co-authored-by: Steven B <51370195+sdb9696@users.noreply.github.com>
Co-authored-by: Teemu Rytilahti <tpr@iki.fi>

kasa/credentials.py

@@ -25,6 +25,7 @@ def get_default_credentials(tuple: tuple[str, str]) -> Credentials:
 
 DEFAULT_CREDENTIALS = {
     "KASA": ("a2FzYUB0cC1saW5rLm5ldA==", "a2FzYVNldHVw"),
+    "KASACAMERA": ("YWRtaW4=", "MjEyMzJmMjk3YTU3YTVhNzQzODk0YTBlNGE4MDFmYzM="),
     "TAPO": ("dGVzdEB0cC1saW5rLm5ldA==", "dGVzdA=="),
     "TAPOCAMERA": ("YWRtaW4=", "YWRtaW4="),
 }