Initial commit for astronvim v4 configuration

lua/custom/filetypes/init.lua

@@ -0,0 +1 @@
+require "custom.filetypes.jenkins"

lua/custom/filetypes/jenkins.lua

@@ -0,0 +1,8 @@
+vim.filetype.add {
+  filename = {
+    ["Jenkinsfile"] = "groovy",
+  },
+  extension = {
+    Jenkinsfile = "groovy",
+  },
+}