Move lsp config to local file structure

.config/nvim/lsp/nextflow_ls.lua

@@ -0,0 +1,38 @@
+---@brief
+---
+--- https://github.com/nextflow-io/language-server
+---
+--- Requirements:
+---  - Java 17+
+---
+--- `nextflow_ls` can be installed by following the instructions [here](https://github.com/nextflow-io/language-server#development).
+---
+--- If you have installed nextflow language server, you can set the `cmd` custom path as follow:
+---
+--- ```lua
+--- vim.lsp.config('nextflow_ls', {
+---     cmd = { 'java', '-jar', 'nextflow-language-server-all.jar' },
+---     filetypes = { 'nextflow' },
+---     settings = {
+---       nextflow = {
+---         files = {
+---           exclude = { '.git', '.nf-test', 'work' },
+---         },
+---       },
+---     },
+--- })
+--- ```
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'java', '-jar', 'nextflow-language-server-all.jar' },
+  filetypes = { 'nextflow' },
+  root_markers = { 'nextflow.config', '.git' },
+  settings = {
+    nextflow = {
+      files = {
+        exclude = { '.git', '.nf-test', 'work' },
+      },
+    },
+  },
+}