Allow CliktCommand.test to take a vararg

For convenience and to better visualize separate options, allow to write

    test("--foo", "--bar")

in addition to

    test("--foo --bar")

This requires to remove the `test(argv: Array<String>, ...)` overload as
that would have the same JVM function signature.

clikt/src/commonMain/kotlin/com/github/ajalt/clikt/testing/CliktTesting.kt

@@ -40,15 +40,15 @@ data class CliktCommandTestResult(
  * @param height The height of the terminal
  */
 fun CliktCommand.test(
-    argv: String,
+    vararg argv: String,
     stdin: String = "",
     envvars: Map<String, String> = emptyMap(),
     includeSystemEnvvars: Boolean = false,
     ansiLevel: AnsiLevel = AnsiLevel.NONE,
     width: Int = 79,
     height: Int = 24,
 ): CliktCommandTestResult {
-    val argvArray = shlex("test", argv, null)
+    val argvArray = argv.flatMap { shlex("test", it, null) }
     return test(argvArray, stdin, envvars, includeSystemEnvvars, ansiLevel, width, height)
 }
 
@@ -76,32 +76,6 @@ fun CliktCommand.test(
     ansiLevel: AnsiLevel = AnsiLevel.NONE,
     width: Int = 79,
     height: Int = 24,
-): CliktCommandTestResult =
-    test(argv.toTypedArray(), stdin, envvars, includeSystemEnvvars, ansiLevel, width, height)
-
-/**
- * Test this command, returning a result that captures the output and result status code.
- *
- * Note that only output printed with [echo][CliktCommand.echo] will be captured. Anything printed with [print] or
- * [println] is not.
- *
- * @param argv The command line to send to the command
- * @param stdin Content of stdin that will be read by prompt options. Multiple inputs should be separated by `\n`.
- * @param envvars A map of environment variable name to value for envvars that can be read by the command
- * @param includeSystemEnvvars Set to true to include the environment variables from the system in addition to those
- *   defined in [envvars]
- * @param ansiLevel Defaults to no colored output; set to [AnsiLevel.TRUECOLOR] to include ANSI codes in the output.
- * @param width The width of the terminal, used to wrap text
- * @param height The height of the terminal
- */
-fun CliktCommand.test(
-    argv: Array<String>,
-    stdin: String = "",
-    envvars: Map<String, String> = emptyMap(),
-    includeSystemEnvvars: Boolean = false,
-    ansiLevel: AnsiLevel = AnsiLevel.NONE,
-    width: Int = 79,
-    height: Int = 24,
 ): CliktCommandTestResult {
     var exitCode = 0
     val recorder = TerminalRecorder(ansiLevel, width, height)