Move lsp config to local file structure

.config/nvim/lsp/solidity.lua

@@ -0,0 +1,42 @@
+---@brief
+---
+--- https://github.com/qiuxiang/solidity-ls
+---
+--- npm i solidity-ls -g
+---
+--- Make sure that solc is installed and it's the same version of the file.  solc-select is recommended.
+---
+--- Solidity language server is a LSP with autocomplete, go to definition and diagnostics.
+---
+--- If you use brownie, use this root_markers:
+--- root_markers = { 'brownie-config.yaml', '.git' }
+---
+--- on includePath, you can add an extra path to search for external libs, on remapping you can remap lib <> path, like:
+---
+--- ```lua
+--- { solidity = { includePath = '/Users/your_user/.brownie/packages/', remapping = { ["@OpenZeppelin/"] = 'OpenZeppelin/openzeppelin-contracts@4.6.0/' } } }
+--- ```
+---
+--- **For brownie users**
+--- Change the root_markers to:
+---
+--- ```lua
+--- root_markers = { 'brownie-config.yaml', '.git' }
+--- ```
+---
+--- The best way of using it is to have a package.json in your project folder with the packages that you will use.
+--- After installing with package.json, just create a `remappings.txt` with:
+---
+--- ```
+--- @OpenZeppelin/=node_modules/OpenZeppelin/openzeppelin-contracts@4.6.0/
+--- ```
+---
+--- You can omit the node_modules as well.
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'solidity-ls', '--stdio' },
+  filetypes = { 'solidity' },
+  root_markers = { '.git', 'package.json' },
+  settings = { solidity = { includePath = '', remapping = {} } },
+}