Introduce "minimal" test reporter (#1563)

docs/modules/pkl-cli/pages/index.adoc

@@ -546,6 +546,15 @@ When enabled, test failures will show intermediate values in the assertion expre
 Use `--no-power-assertions` to disable this feature if you prefer simpler output.
 ====
 
+[[test-reporter]]
+.--test-reporter
+[%collapsible]
+====
+Default: `spec` +
+Example: `--test-reporter minimal` +
+Which test reporter to use for CLI output. Possible values are `spec` and `minimal`.
+====
+
 This command also takes <<common-options, common options>>.
 
 [[command-run]]
@@ -667,6 +676,14 @@ Force generation of expected examples. +
 The old expected files will be deleted if present.
 ====
 
+.--test-reporter
+[%collapsible]
+====
+Default: `spec` +
+Example: `--test-reporter minimal` +
+Which test reporter to use for CLI output. Possible values are `spec` and `minimal`.
+====
+
 This command also takes <<common-options,common options>>.
 
 [[command-project-resolve]]

docs/modules/pkl-gradle/pages/index.adoc

@@ -322,6 +322,15 @@ Default: `false` +
 Whether to ignore expected example files and generate them again.
 ====
 
+[[test-reporter]]
+.test-reporter: Property<String>
+[%collapsible]
+====
+Default: `"spec"` +
+Example: `reporter = "minimal"` +
+Which test reporter to use for CLI output. Possible values are `"spec"` and `"minimal"`.
+====
+
 [[power-assertions-test]]
 .powerAssertions: Property<Boolean>
 [%collapsible]
@@ -677,6 +686,14 @@ Default: `false` +
 Whether to ignore expected example files and generate them again.
 ====
 
+.test-reporter: Property<String>
+[%collapsible]
+====
+Default: `"spec"` +
+Example: `reporter = "minimal"` +
+Which test reporter to use for CLI output. Possible values are `"spec"` and `"minimal"`.
+====
+
 Common properties:
 
 include::../partials/gradle-common-properties.adoc[]