Add MUnit to the community build

Author: gabro

.gitmodules

@@ -71,3 +71,6 @@
 [submodule "community-build/community-projects/zio"]
 	path = community-build/community-projects/zio
 	url = https://github.com/dotty-staging/zio.git
+[submodule "community-build/community-projects/munit"]
+	path = community-build/community-projects/munit
+	url = https://github.com/dotty-staging/munit.git

community-build/community-projects/munit

@@ -274,6 +274,13 @@ object projects:
     sbtTestCommand = "testJVMDotty",
     sbtUpdateCommand = "update"
   )
+
+  lazy val munit = SbtCommunityProject(
+    project          = "munit",
+    sbtTestCommand   = "testsJVM/test",
+    sbtUpdateCommand = "munitJVM/update",
+  )
+
 end projects
 
 @Category(Array(classOf[TestCategory]))
@@ -348,6 +355,7 @@ class CommunityBuildTest:
   @Test def effpi = projects.effpi.run()
   @Test def sconfig = projects.sconfig.run()
   @Test def zio = projects.zio.run()
+  @Test def munit = projects.munit.run()
 end CommunityBuildTest
 
 class TestCategory