feature request - add cd and open options

[muralikodali]

it will easy to use the program if cd and open options are provided.

• tag cd
• tag open

i have achieved this using command line as shown below.

sqlite3 -header -csv /home/murali/.config/tags.db "select * from tagged" | tail -n +2 |  xsv select 2,3 | fzf | ccut -d , -f 1