Add prof_message_t to wrap all message attributes

Probably missing copy of body to plain in carbon and privmessage.
Only covers the incoming message path because goal is OMEMO decryption
of untrusted message.
Cover some of the log functions but not all.

src/omemo/store.c

@@ -414,7 +414,7 @@ is_trusted_identity(const signal_protocol_address *address, uint8_t *key_data,
 
 
     if (identity_key_store->recv) {
-        identity_key_store->trusted = ret;
+        identity_key_store->trusted_msg = ret;
         return 1;
     } else {
         return ret;

src/omemo/store.h

@@ -49,7 +49,7 @@ typedef struct {
    uint32_t registration_id;
    GHashTable *trusted;
    bool recv;
-   bool trusted;
+   bool trusted_msg;
 } identity_key_store_t;
 
 GHashTable * session_store_new(void);