chore(misc): align spotless with linea-monorepo

[gauravahuja]

LFDT-Lineth/lineth-monorepo#2540

⚠️ Please make sure PR Title conforms to https://www.conventionalcommits.org/en/v1.0.0/#specification.
During the merge squash please be mindful to stick to conventional commits as well ⚠️

---

Note

Low Risk
Low risk: changes are primarily formatting/linters and editor configuration updates, plus large-scale reformatting with no intended runtime behavior changes.

Overview
Aligns formatting/tooling with Linea monorepo conventions by updating .editorconfig and reconfiguring Spotless to use an explicit ktlint version plus rule overrides, and pinning greclipse for *.gradle formatting.

Applies the new style rules across the codebase (Kotlin sources, tests, and Gradle files), resulting in widespread whitespace/indentation/import-order changes and a few comment/string wrap adjustments, without functional logic changes.

^{Reviewed by Cursor Bugbot for commit df6913f. Bugbot is set up for automated code reviews on this repo. Configure here.}

[codecov-commenter]

Codecov Report

❌ Patch coverage is 95.41667% with 22 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (main@a9be394). Learn more about missing BASE report.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
.../main/kotlin/maru/test/cluster/MaruConfigHelper.kt	79.16%	1 Missing and 4 partials ⚠️
...c/main/kotlin/maru/web3j/TekuWeb3JClientFactory.kt	0.00%	3 Missing ⚠️
...ain/kotlin/maru/test/genesis/MaruGenesisFactory.kt	50.00%	3 Missing ⚠️
.../kotlin/maru/consensus/qbft/DifficultyAwareQbft.kt	71.42%	1 Missing and 1 partial ⚠️
...s/src/main/kotlin/maru/test/cluster/MaruCluster.kt	33.33%	0 Missing and 2 partials ⚠️
.../kotlin/maru/p2p/discovery/MaruDiscoveryService.kt	80.00%	1 Missing and 1 partial ⚠️
api/src/main/kotlin/maru/api/ApiServerImpl.kt	95.45%	1 Missing ⚠️
.../src/main/kotlin/maru/api/node/GetSyncingStatus.kt	83.33%	0 Missing and 1 partial ⚠️
app/src/main/kotlin/maru/app/MaruAppFactory.kt	98.36%	0 Missing and 1 partial ⚠️
...bs/mappers/src/main/kotlin/maru/mappers/Mappers.kt	97.91%	1 Missing ⚠️
... and 1 more

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #516   +/-   ##
=======================================
  Coverage        ?   84.04%           
  Complexity      ?     1184           
=======================================
  Files           ?      231           
  Lines           ?     8372           
  Branches        ?      683           
=======================================
  Hits            ?     7036           
  Misses          ?      988           
  Partials        ?      348           

Flag	Coverage Δ
kotlin	84.04% <95.41%> (?)

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