fix: Mistake inside ExcellentEconomy enum name (depreciate old usage)

[1robie]

This pull request updates the project's Gradle build system to use Gradle 9.6.1 and Java 25, and introduces improvements to the Currencies enum to support deprecated aliases for backward compatibility. Additionally, it refines the Gradle wrapper scripts for better error handling and compliance, and updates documentation to guide users on resolving currency names safely.

Build system upgrades and compatibility:

• Upgraded Gradle from version 8.8 to 9.6.1 and set the Java version to 25 in the build workflow for improved compatibility and access to the latest features. (gradle/wrapper/gradle-wrapper.properties, .github/workflows/build.yml) [1] [2]
• Enhanced Gradle wrapper scripts (gradlew, gradlew.bat) with SPDX license identifiers, improved error messages, better environment handling, and switched to using the -jar option for launching Gradle. (gradlew, gradlew.bat) [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11]

Currencies enum improvements:

• Added a deprecated alias EXCELLENTEECONOMY for EXCELLENTECONOMY in the Currencies enum, ensuring old configs and code remain compatible, and introduced the fromName(String) method to resolve names safely while logging warnings for deprecated usage. (src/main/java/fr/traqueur/currencies/Currencies.java) [1] [2] [3]

Documentation updates:

• Updated the README to correct the currency name, document the new fromName(String) method, and clarify the handling of deprecated aliases for backward compatibility. (readme.md) [1] [2]

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 31 complexity · 0 duplication

Metric	Results
Complexity	31
Duplication	0

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