Attempt to address repeated puts

[decentralgabe]

• add a new cache check to make sure duplicate puts don't pile up
• increased the dht rate limiter limits
• add methods to instrument total num of records

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 54.20561% with 49 lines in your changes are missing coverage. Please review.

Project coverage is 55.48%. Comparing base (f08a311) to head (fd58db6).

Files	Patch %	Lines
impl/pkg/service/pkarr.go	10.00%	17 Missing and 1 partial ⚠️
impl/pkg/pkarr/record.go	0.00%	10 Missing ⚠️
impl/pkg/storage/db/postgres/postgres.go	52.94%	4 Missing and 4 partials ⚠️
impl/pkg/dht/dht.go	33.33%	6 Missing ⚠️
impl/integrationtest/main.go	0.00%	3 Missing ⚠️
impl/pkg/server/server.go	50.00%	1 Missing and 2 partials ⚠️
impl/pkg/storage/db/bolt/pkarr.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #170      +/-   ##
==========================================
- Coverage   55.63%   55.48%   -0.15%     
==========================================
  Files          29       29              
  Lines        2245     2314      +69     
==========================================
+ Hits         1249     1284      +35     
- Misses        879      908      +29     
- Partials      117      122       +5     

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