feat(bigquery-driver): Set up Cube User agent for connection

[KSDaemon]

Check List

• Tests have been run in packages where changes have been made if available
• Linter has been run for changed code
• Tests for the changes have been added if not covered yet

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 54.64%. Comparing base (4c55cb1) to head (0e527a6).
⚠️ Report is 8 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (4c55cb1) and HEAD (0e527a6). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (4c55cb1)	HEAD (0e527a6)
cubesql	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #10177       +/-   ##
===========================================
- Coverage   83.29%   54.64%   -28.65%     
===========================================
  Files         244      214       -30     
  Lines       74180    16996    -57184     
  Branches        0     3471     +3471     
===========================================
- Hits        61786     9288    -52498     
+ Misses      12394     7208     -5186     
- Partials        0      500      +500     

Flag	Coverage Δ
cube-backend	54.64% <100.00%> (?)
cubesql	?

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