pcli: add pcli q dex position

[hdevalence]

Output:

     Running `target/release/pcli q dex position plpid13jq86atertnwcw4zuacjhfuuxz93ptu69wnxsk97xckxhczqug8swd3akt`
Scanning blocks from last sync height 4290 to latest height 4522
[0s] ██████████████████████████████████████████████████     232/232     1575/s ETA: 0s
 ID          plpid13jq86atertnwcw4zuacjhfuuxz93ptu69wnxsk97xckxhczqug8swd3akt
 State       opened
 Reserves 1  0lpnft_opened_plpid1930jpputl38kq4ae5t6j36rq5ydxzep4nem2tx5av87l4j5maass0e4fpf
 Reserves 2  1lpnft_opened_plpid1ta9emmcxq9gvdfs299mk8gjc03rlwkxv4jme2f46uamaee294khszramt7
 Fee         0bps
 p           1
 q           1
 Nonce       5201f26167dacce0ebadfd8a67babda68f80eeb3e168d92d826a3785b55532a9

With --raw:

{
  "phi": {
    "component": {
      "p": {
        "lo": "1"
      },
      "q": {
        "lo": "1"
      }
    },
    "pair": {
      "asset1": {
        "inner": "7V+mq+mfKkrCkHGTFurY6o7Z1E5KuqVg03vsRulxzQM="
      },
      "asset2": {
        "inner": "89Kl/0nozfEB23uM6RAOxkcgXAZUgc0Jh4ncw26IpA8="
      }
    }
  },
  "nonce": "UgHyYWfazODrrf2KZ7q9po+A7rPhaNktgmo3hbVVMqk=",
  "state": {
    "state": "POSITION_STATE_ENUM_OPENED"
  },
  "reserves": {
    "r1": {},
    "r2": {
      "lo": "1"
    }
  }
}