feat(ziggy): add ziggy and ziggy_schema support (#3296)

Add support for the Ziggy data serialization format language server. The
server supports both the ziggy file format and the schema format

lua/lspconfig/server_configurations/ziggy.lua

@@ -0,0 +1,21 @@
+local util = require 'lspconfig.util'
+
+return {
+  default_config = {
+    cmd = { 'ziggy', 'lsp' },
+    filetypes = { 'ziggy' },
+    root_dir = util.find_git_ancestor,
+    single_file_support = true,
+  },
+  docs = {
+    description = [[
+https://ziggy-lang.io/documentation/ziggy-lsp/
+
+Language server for the Ziggy data serialization format
+
+]],
+    default_config = {
+      root_dir = [[util.find_git_ancestor]],
+    },
+  },
+}

lua/lspconfig/server_configurations/ziggy_schema.lua

@@ -0,0 +1,21 @@
+local util = require 'lspconfig.util'
+
+return {
+  default_config = {
+    cmd = { 'ziggy', 'lsp', '--schema' },
+    filetypes = { 'ziggy_schema' },
+    root_dir = util.find_git_ancestor,
+    single_file_support = true,
+  },
+  docs = {
+    description = [[
+https://ziggy-lang.io/documentation/ziggy-lsp/
+
+Language server for schema files of the Ziggy data serialization format
+
+]],
+    default_config = {
+      root_dir = [[util.find_git_ancestor]],
+    },
+  },
+}