* enh: taos shell support cloud 2.6

* enh: taos shell support cloud (#13879)

* enh: support url in commandline taos shell

* fix: normal host logic

* enh: add default -R if env var set

* fix: refine taos shell cloud service

* fix: improve user friendly

* fix: add cloud tcp connection

* fix: header file

* fix: add other os