Add ability to specify TLS certs/key for gRPC

[intelfisz]

No description provided.

[codecov]

Codecov Report

Merging #165 (3d71217) into main (21ac1dc) will decrease coverage by 0.38%.
The diff coverage is 96.49%.

@@            Coverage Diff             @@
##             main     #165      +/-   ##
==========================================
- Coverage   99.03%   98.65%   -0.38%     
==========================================
  Files           3        4       +1     
  Lines         311      372      +61     
==========================================
+ Hits          308      367      +59     
- Misses          2        4       +2     
  Partials        1        1              

Impacted Files	Coverage Δ
pkg/utils/tls.go	96.49% <96.49%> (ø)

... and 1 file with indirect coverage changes