tt CLI (2.10): `tt tcm status` command

[TarantoolBot]

Product: tt CLI
Since: tt 2.10.0
Audience/target: all
Dev ticket: https://jira.vk.team/browse/TNTP-1992
Root document:

• https://www.tarantool.io/en/doc/latest/reference/tooling/tt_cli/tcm/
• https://www.tarantool.io/en/doc/latest/tooling/tcm/ ?

SME: @ AlexandrLitkevich @ oleg-jukovec

Details

Add tt tcm status command that displays whether TCM is running in:

• watchdog mode (with auto-recovery)
• interactive mode

Closes #TNTP-1992
Requested by @AlexandrLitkevich in tarantool/tt@6930160.