Add ShadowJar compatibility and Query file can be define name with comment

Add Migration and Query definition class
Add Docker DB for tests

src/main/kotlin/fr/postgresjson/definition/Query.kt

@@ -0,0 +1,25 @@
+package fr.postgresjson.definition
+
+import java.nio.file.Path
+
+class Query(
+    override val script: String,
+    source: Path
+) : Resource {
+    override var source: Path? = source
+    override val name: String = getNameFromComment(script) ?: getNameFromFile(source)
+
+    /** Try to get name from comment in file */
+    private fun getNameFromComment(script: String): String? =
+        """-- *name ?: ?(?<name>[^ \n]+)"""
+            .toRegex(setOf(RegexOption.IGNORE_CASE, RegexOption.MULTILINE))
+            .find(script)?.let {
+            it.groups["name"]?.value?.trim()
+        }
+
+    /** Try to get name from the filename */
+    private fun getNameFromFile(source: Path): String = source
+        .fileName.toString()
+        .substringAfterLast("/")
+        .substringBeforeLast(".sql")
+}