txmgr: add more tx metrics

[shrimalmadhur]

• Add metrics to track confirmed tx latency
• Add metrics to track how many time tx gas price had to be bumped beofre it got included

Description

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Tests

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Additional context

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Metadata

• Fixes #[Link to Issue]

TODOs

• Author or reviewer has added an entry to the current release notes draft, if appropriate.

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Latest commit: 0c3b866

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[trianglesphere]

lgtm

[codecov]

Codecov Report

Merging #5331 (0c3b866) into develop (44eec0d) will decrease coverage by 0.03%.
The diff coverage is 33.33%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #5331      +/-   ##
===========================================
- Coverage    39.85%   39.83%   -0.03%     
===========================================
  Files          391      391              
  Lines        25634    25657      +23     
  Branches       838      838              
===========================================
+ Hits         10216    10220       +4     
- Misses       14639    14657      +18     
- Partials       779      780       +1     

Flag	Coverage Δ
bedrock-go-tests	36.31% <33.33%> (-0.03%)	⬇️
common-ts-tests	26.82% <ø> (ø)
contracts-bedrock-tests	51.32% <ø> (ø)
contracts-tests	98.86% <ø> (ø)
core-utils-tests	60.41% <ø> (ø)
dtl-tests	47.15% <ø> (ø)
fault-detector-tests	33.88% <ø> (ø)
sdk-tests	38.86% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
op-service/txmgr/metrics/tx_metrics.go	0.00% <0.00%> (ø)
op-service/txmgr/metrics/noop.go	100.00% <100.00%> (ø)
op-service/txmgr/txmgr.go	76.63% <100.00%> (+0.40%)	⬆️

... and 1 file with indirect coverage changes

[mergify]

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[mergify]

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