fix: Add warn log for create/update interval

[lindseysimple]

Add warn log for interval value from Interval and AutoEvent if the value is less than the suggested value.

Closes #4586.

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PR Checklist

Please check if your PR fulfills the following requirements:

• I am not introducing a breaking change (if you are, flag in conventional commit message with BREAKING CHANGE: describing the break)
• I am not introducing a new dependency (add notes below if you are)
• I have added unit tests for the new feature or bug fix (if not, why?)
• I have fully tested (add details below) this the new feature or bug fix (if not, why?)
• I have opened a PR for the related docs change (if not, why?) - no doc change needed as the change only shows the warning logs when the interval value is less than the suggested value.

Testing Instructions

Invoke the POST interval API with the following command:

curl --location 'http://localhost:59861/api/v3/interval' \
--header 'Content-Type: application/json' \
--data '  [ 
    {
      "apiVersion":"v3",
      "interval":{
         "name":"test",
         "start":"20230707T094508",
         "interval":"599us"
      }
   }
  ]'

The following warning log should be displayed in the support-scheduler log:

level=WARN ts=2023-07-05T07:27:29.922821Z app=support-scheduler source=time.go:30 msg="the interval value '599µs' is smaller than the suggested value '10ms', which might cause abnormal CPU increase"

New Dependency Instructions (If applicable)

[codecov-commenter]

Codecov Report

Merging #4597 (4c96589) into main (fa614b6) will increase coverage by 0.02%.
The diff coverage is 63.63%.

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@@            Coverage Diff             @@
##             main    #4597      +/-   ##
==========================================
+ Coverage   41.57%   41.59%   +0.02%     
==========================================
  Files         106      107       +1     
  Lines        9759     9770      +11     
==========================================
+ Hits         4057     4064       +7     
- Misses       5356     5360       +4     
  Partials      346      346              

Impacted Files	Coverage Δ
internal/core/metadata/application/device.go	0.00% <0.00%> (ø)
internal/pkg/utils/time.go	100.00% <100.00%> (ø)

[cloudxxx8]

LGTM

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[lindseysimple]

recheck

[lenny-goodell]

LGTM