feat: add get support for bare-metal

[shawnh2]

effects:

~ ./bin/gtctl cluster get test --bare-metal

+-----------+-----------+
| COMPONENT |    PID    |
+-----------+-----------+
| frontend  | .0: 82062 |
+-----------+-----------+
| datanode  | .0: 82059 |
+           +-----------+
|           | .1: 82060 |
+           +-----------+
|           | .2: 82061 |
+-----------+-----------+
| metasrv   |     82058 |
+-----------+-----------+
| etcd      |     82054 |
+-----------+-----------+
CREATION-DATE: 2023-08-23 23:11:57.432645 +0800 CST
GREPTIMEDB-VERSION: latest
ETCD-VERSION: v3.5.7
CLUSTER-DIR: /.gtctl/test
CLUSTER-CONFIG:
cluster:
    artifact:
        local: ""
        version: latest
    frontend:
        replicas: 1
        grpcAddr: ""
        httpAddr: ""
        postgresAddr: ""
        metaAddr: ""
        logLevel: ""
    meta:
        storeAddr: 127.0.0.1:2379
        serverAddr: 0.0.0.0:3002
        bindAddr: ""
        httpAddr: 0.0.0.0:14001
        logLevel: ""
    datanode:
        replicas: 3
        nodeID: 0
        rpcAddr: 0.0.0.0:14100
        httpAddr: 0.0.0.0:14300
        dataDir: ""
        walDir: ""
        procedureDir: ""
        logLevel: ""
etcd:
    artifact:
        local: ""
        version: v3.5.7

after the implementation of get, the list, connect, update cmd can be implemented.

related to #96

[codecov-commenter]

Codecov Report

Merging #137 (9fa3fcc) into develop (2f00e10) will decrease coverage by 1.98%.
The diff coverage is 27.91%.

@@             Coverage Diff             @@
##           develop     #137      +/-   ##
===========================================
- Coverage    29.38%   27.40%   -1.98%     
===========================================
  Files            8        9       +1     
  Lines          953     1153     +200     
===========================================
+ Hits           280      316      +36     
- Misses         608      765     +157     
- Partials        65       72       +7     

Files Changed	Coverage Δ
pkg/cmd/gtctl/cluster/get/get.go	9.92% <12.03%> (ø)
pkg/deployer/baremetal/deployer.go	34.92% <47.19%> (-0.55%)	⬇️

[zyy17]

Seems great!