pw_bluetooth: Add LEReadLocalSupportedFeaturesCommandCompleteEvent

Add LEReadLocalSupportedFeaturesCommandCompleteEvent Emboss packet
definition.

Test: pw presubmit --step gn_emboss_nanopb_build
Change-Id: I08dc6f503cc3918952d609c7fc12182c423ebcb6
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/169931
Reviewed-by: Ali Saeed <saeedali@google.com>
Pigweed-Auto-Submit: Ben Lawson <benlawson@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/pw_bluetooth/public/pw_bluetooth/hci_events.emb b/pw_bluetooth/public/pw_bluetooth/hci_events.emb
index 8383bbc..7695ac1 100644
--- a/pw_bluetooth/public/pw_bluetooth/hci_events.emb
+++ b/pw_bluetooth/public/pw_bluetooth/hci_events.emb
@@ -862,3 +862,12 @@
     -- Total number of HCI Synchronous Data packets that can be stored in the
     -- data buffers of the Controller. A value of 0 indicates that the
     -- Controller does not support SCO or eSCO over HCI.
+
+
+struct LEReadLocalSupportedFeaturesCommandCompleteEvent:
+  -- LE Read Local Supported Features Command (v4.0) (LE)
+  let hdr_size = hci.CommandCompleteEvent.$size_in_bytes
+  0     [+hdr_size]                      hci.CommandCompleteEvent  command_complete
+  $next [+1]                             hci.StatusCode            status
+  $next [+8]  bits:
+    0     [+LEFeatureSet.$size_in_bits]  LEFeatureSet              le_features