refactor(build): decouple per-module versioning

Each module uses its own version property instead of a shared
artefactVersion, so changes to one module no longer force a
version bump across all modules. CI now supports per-module
release tags with the format <module>/v<version>.

version-catalogue/build.gradle.kts

@@ -28,7 +28,14 @@ plugins {
     id("signing")
 }
 
-val artefactVersion: String by project
+val commonToolboxVersion: String by project
+val identityGeneratorVersion: String by project
+val cryptoToolboxVersion: String by project
+val mathToolboxVersion: String by project
+val tupleVersion: String by project
+val versionCatalogueVersion: String by project
+
+version = versionCatalogueVersion
 val projectUrl: String by project
 val projectGithubUrl: String by project
 val licenseName: String by project
@@ -40,11 +47,11 @@ repositories {
 
 dependencies {
     constraints {
-        api("com.onixbyte:common-toolbox:$artefactVersion")
-        api("com.onixbyte:identity-generator:$artefactVersion")
-        api("com.onixbyte:crypto-toolbox:$artefactVersion")
-        api("com.onixbyte:math-toolbox:$artefactVersion")
-        api("com.onixbyte:tuple:$artefactVersion")
+        api("com.onixbyte:common-toolbox:$commonToolboxVersion")
+        api("com.onixbyte:identity-generator:$identityGeneratorVersion")
+        api("com.onixbyte:crypto-toolbox:$cryptoToolboxVersion")
+        api("com.onixbyte:math-toolbox:$mathToolboxVersion")
+        api("com.onixbyte:tuple:$tupleVersion")
     }
 }
 
@@ -53,7 +60,7 @@ publishing {
         create<MavenPublication>("versionCatalogue") {
             groupId = group.toString()
             artifactId = "version-catalogue"
-            version = artefactVersion
+            version = versionCatalogueVersion
 
             pom {
                 name = "OnixByte Version Catalogue"