🌐 Sync Translations + Update README Progress Table (#3246)

### Description of Changes

This Pull Request was automatically generated to synchronize updates to
translation files and documentation. Below are the details of the
changes made:

#### **1. Synchronization of Translation Files**
- Updated translation files (`messages_*.properties`) to reflect changes
in the reference file `messages_en_GB.properties`.
- Ensured consistency and synchronization across all supported language
files.
- Highlighted any missing or incomplete translations.

#### **2. Update README.md**
- Generated the translation progress table in `README.md`.
- Added a summary of the current translation status for all supported
languages.
- Included up-to-date statistics on translation coverage.

#### **Why these changes are necessary**
- Keeps translation files aligned with the latest reference updates.
- Ensures the documentation reflects the current translation progress.

---

Auto-generated by [create-pull-request][1].

[1]: https://github.com/peter-evans/create-pull-request

---------

Co-authored-by: stirlingbot[bot] <195170888+stirlingbot[bot]@users.noreply.github.com>

src/main/resources/messages_el_GR.properties

@@ -231,7 +231,31 @@ adminUserSettings.activeUsers=Ενεργοί χρήστες:
 adminUserSettings.disabledUsers=Απενεργοποιημένοι χρήστες:
 adminUserSettings.totalUsers=Συνολικοί χρήστες:
 adminUserSettings.lastRequest=Τελευταίο αίτημα
+adminUserSettings.usage=View Usage
 
+endpointStatistics.title=Endpoint Statistics
+endpointStatistics.header=Endpoint Statistics
+endpointStatistics.top10=Top 10
+endpointStatistics.top20=Top 20
+endpointStatistics.all=All
+endpointStatistics.refresh=Refresh
+endpointStatistics.includeHomepage=Include Homepage ('/')
+endpointStatistics.includeLoginPage=Include Login Page ('/login')
+endpointStatistics.totalEndpoints=Total Endpoints
+endpointStatistics.totalVisits=Total Visits
+endpointStatistics.showing=Showing
+endpointStatistics.selectedVisits=Selected Visits
+endpointStatistics.endpoint=Endpoint
+endpointStatistics.visits=Visits
+endpointStatistics.percentage=Percentage
+endpointStatistics.loading=Loading...
+endpointStatistics.failedToLoad=Failed to load endpoint data. Please try refreshing.
+endpointStatistics.home=Home
+endpointStatistics.login=Login
+endpointStatistics.top=Top
+endpointStatistics.numberOfVisits=Number of Visits
+endpointStatistics.visitsTooltip=Visits: {0} ({1}% of total)
+endpointStatistics.retry=Retry
 
 database.title=Εισαγωγή/Εξαγωγή βάσης δεδομένων
 database.header=Εισαγωγή/Εξαγωγή βάσης δεδομένων