tt install/search/uninstall

[patiencedaur]

Epic: Document TT CLI
Related dev issue: tarantool/tt#12
Related dev epic: tarantool/tt#17

Product: TT CLI
Since: 2.10
Audience/target: dev, admin
Root document: TBA
SME: @ LeonidVas

[p7nov]

tt remove is renamed to tt uninstall