Verify MobSF service version with scanner_version

MobSF service version is different from analyzer version. We need to implement a verification process so that it enforces us to update versions in the both places. According to this comment, the following is suggested code-snippet:

type serviceVersion struct {
	Version     string `json:"version"`
}

// func analyze(...)

archive, err := createArchive(path, excludedDirs)

// versionUrl exposes the service version to verify analyzer match
versionUrl := getBaseURL()+"/api/v1/dynamic/get_apps"

req, err := newRequest(http.MethodGet, versionUrl)

if resp.StatusCode == http.StatusOK {
  v := new(serviceVersion)
  if err := json.NewDecoder(resp.Body).Decode(v); err != nil {
    if v.Version != os.Getenv("SCANNER_VERSION") {
      panic("VERSION MISMATCH")
    }
  }
}

info, err := upload(archive)

Ideally, we should keep track of the version in one place. We need to investigate whether we can implement a better solution to this issue by keeping the version in one place which will serve as a single source of truth.