Add workflow to check CAIPs

.ci/check_caips.main.kts

@@ -0,0 +1,40 @@
+#!/usr/bin/env kotlin
+
+@file:Repository("https://jitpack.io")
+@file:DependsOn("com.github.komputing:XIP-checker:0.0.1")
+
+import org.komputing.dipchecker.CheckConfig
+import org.komputing.dipchecker.checkDate
+import org.komputing.dipchecker.checkFolder
+import java.io.File
+import kotlin.system.exitProcess
+
+val config = CheckConfig("caip",
+                mapOf(
+                    "title" to { },
+                    "status" to { value ->
+                        if (!listOf("Draft", "Active", "Review", "Final", "Superseded").contains(value)) throw IllegalArgumentException("Invalid status $value")
+                    },
+                    "type" to { value ->
+                        if (!listOf("Meta", "Standard").contains(value)) throw IllegalArgumentException("Invalid type $value")
+                    },
+                    "author" to { },
+                    "created" to { checkDate(it) }),
+                mapOf(
+                    "requires" to {
+                        if (!Regex("[0-9]+(, [0-9]+)*").matches(it)) throw IllegalArgumentException("Invalid requires $it")
+                    },
+                    "discussions-to" to { },
+                    "superseded-by" to { },
+                    "updated" to { checkDate(it) }
+                )
+)
+
+try {
+    println(checkFolder(File("CAIPs"), config))
+} catch (e: Exception) {
+    println("Validation of CAIPs failed")
+    println("Reason: " + e.message)
+    exitProcess(1)
+}
+

.github/workflows/ci.yml

@@ -0,0 +1,12 @@
+name: CI
+on:
+  push:
+  pull_request:
+  workflow_dispatch:
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: fwilhe2/setup-kotlin@main
+    - run: kotlin .ci/check_caips.main.kts