feat: Added /loglevels REST endpoint

[bstasyszyn]

The /loglevels endpoints allows you to update the logging levels dynamically and retrieve the current levels.

[codecov]

Codecov Report

Patch coverage: 93.12% and project coverage change: -0.06 ⚠️

Comparison is base (07e05f2) 88.11% compared to head (1e7e53a) 88.06%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1534      +/-   ##
==========================================
- Coverage   88.11%   88.06%   -0.06%     
==========================================
  Files         220      219       -1     
  Lines       20900    20764     -136     
==========================================
- Hits        18417    18286     -131     
+ Misses       1587     1581       -6     
- Partials      896      897       +1     

Impacted Files	Coverage Δ
cmd/orb-cli/common/common.go	73.25% <ø> (ø)
cmd/orb-cli/main.go	77.77% <ø> (ø)
cmd/orb-driver/startcmd/start.go	49.54% <ø> (ø)
cmd/orb-server/main.go	77.77% <ø> (ø)
pkg/anchor/anchorlinkset/anchorlinkset.go	62.50% <0.00%> (ø)
pkg/document/remoteresolver/remoteresolver.go	91.30% <ø> (ø)
pkg/driver/restapi/operations.go	72.22% <ø> (ø)
pkg/healthcheck/healthcheck.go	86.90% <ø> (ø)
pkg/nodeinfo/handler.go	89.28% <ø> (ø)
pkg/pubsub/wmlogger/wmlogger.go	100.00% <ø> (ø)
... and 102 more

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