implement optional variable argument/option ranges, refactor exception handling

adapt required/optional argument handling
implement bounded/unbounded variable argument handling

src/commonMain/kotlin/com/infendro/cli/exception/run/InvalidOptionCount.kt

@@ -0,0 +1,18 @@
+package com.infendro.cli.exception.run
+
+import com.infendro.cli.command.Option
+
+class InvalidOptionCount(
+    val option: Option<*>,
+    val count: Int,
+) : RunException() {
+    override val message: String
+        get() {
+            val expected = when {
+                option.min == option.max -> "${option.min}"
+                option.unbounded -> "at least ${option.min}"
+                else -> "${option.min} to ${option.max}"
+            }
+            return """invalid number of values passed for option "${option.name}": expected $expected but found $count"""
+        }
+}