Feature: Add JPMS Support (Issue #365) (#592)

## Description
This PR adds support for the Java Platform Module System (JPMS) by introducing a `module-info.java` file.
This allows `kotlin-logging` to be used as a named module in modularized Java applications.

Resolves #365.

## Technical Details
- Added `src/jvmMain/java/module-info.java` defining the `io.github.oshai.kotlinlogging` module.
- Leveraged standard Kotlin Multiplatform (KMP) support for Java source sets (valid in Kotlin 2.1+).
- Updated `build.gradle.kts` to:
    - Configure `compileJvmMainJava` with `--patch-module` to allow `module-info.java` to see Kotlin classes in the same module.
    - Preserved `jvmTarget = 1.8` for Kotlin classes to maintain Android and Java 8 compatibility.
    - Configured `gradle.properties` to allow mixed JVM targets (1.8 for Kotlin, 9+ for `module-info`).
- Added static requirements for optional dependencies:
    - `ch.qos.logback.classic` & `core`
    - `kotlinx.coroutines.slf4j`
    - `org.graalvm.nativeimage`

## Verification
- Verified that `./gradlew jvmJar` builds successfully.
- Verified `module-info.class` is matching JDK 9+ (implicitly).
- Verified Kotlin classes target Java 1.8 (major version 52).


Fixes #365

Author: oshai

.gitignore

@@ -76,3 +76,5 @@ hs_err_pid*
 github_packages.properties
 github_packages.properties.old
 /kotlin-js-store/yarn.lock
+
+.vscode

build.gradle.kts

@@ -45,6 +45,10 @@ kotlin {
     jvm {
         compilations {
             val main by getting
+            tasks.named<JavaCompile>("compileJvmMainJava") {
+                options.compilerArgs.add("--patch-module")
+                options.compilerArgs.add("io.github.oshai.kotlinlogging=${main.output.classesDirs.asPath}")
+            }
             // logback tests are testing only direct logback dependency (not slf4j/log4j)
             val logbackTest by compilations.creating {
                 defaultSourceSet {

gradle.properties

@@ -4,3 +4,5 @@ org.gradle.jvmargs=-Xmx2048m
 # see https://kotlinlang.org/docs/whatsnew18.html#sourcedirectories
 kotlin.mpp.androidSourceSetLayoutVersion=2
 kotlin.mpp.applyDefaultHierarchyTemplate=false
+# Allow inconsistent JVM targets: Kotlin targets 1.8 (for compatibility), but module-info.java requires 9+.
+kotlin.jvm.target.validation.mode=warning

src/jvmMain/java/module-info.java

@@ -0,0 +1,15 @@
+module io.github.oshai.kotlinlogging {
+    requires kotlin.stdlib;
+    requires kotlinx.coroutines.core;
+    requires org.slf4j;
+    requires java.logging;
+    requires static ch.qos.logback.classic;
+    requires static ch.qos.logback.core;
+    requires static kotlinx.coroutines.slf4j;
+    requires static org.graalvm.nativeimage;
+
+    exports io.github.oshai.kotlinlogging;
+    exports io.github.oshai.kotlinlogging.coroutines;
+    exports io.github.oshai.kotlinlogging.logback;
+    exports io.github.oshai.kotlinlogging.slf4j;
+}