bgpd: Deprecate `bgpStatusCodes` and `bgpOriginCodes`

bgpd: Deprecate `bgpStatusCodes` and `bgpOriginCodes`

```
donatas-pc# sh ip bgp neighbors 192.168.10.124 advertised-routes json
{
  "bgpTableVersion":11,
  "bgpLocalRouterId":"192.168.10.17",
  "defaultLocPrf":100,
  "localAS":65002,
  "bgpStatusCodes":{
    "suppressed":"s",
    "damped":"d",
    "history":"h",
    "valid":"*",
    "best":">",
    "multipath":"=",
    "internal":"i",
    "ribFailure":"r",
    "stale":"S",
    "removed":"R"
  },
  "bgpOriginCodes":{
    "igp":"i",
    "egp":"e",
    "incomplete":"?"
  },
  "advertisedRoutes":{
    "200.200.200.200\/32":{
      "addrPrefix":"200.200.200.200",
      "prefixLen":32,
      "network":"200.200.200.200\/32",
      "nextHopGlobal":"2a02:4780:abc::2",
      "weight":0,
      "path":"65001",
      "bgpOriginCode":"?",
      "origin":"incomplete", <<<<<<<
      "valid":true, <<<<<<<<
      "best":true,  <<<<<<<<
      "appliedStatusSymbols":{
        "*":true,
        ">":true
      }
    }
  },
  "totalPrefixCounter":1,
  "filteredPrefixCounter":0
}
```

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>