Major lsp overhaul. Use new 0.11+ apis, remove lspconfig, remove lots of

mason/lspconfig util plugins. Currently supports following lsps: gopls,
clangd, lua-language-server, cmake-language-server

home/.config/nvim/lua/language_servers/lua_ls.lua

@@ -0,0 +1,39 @@
+return {
+    cmd = { "lua-language-server" },
+    filetypes = { "lua" },
+    root_markers = {
+        ".luarc.json",
+        ".luarc.jsonc",
+        ".luacheckrc",
+        ".stylua.toml",
+        "stylua.toml",
+        "selene.toml",
+        "selene.yml",
+        ".git"
+    },
+    on_init = function(client)
+        local path = vim.tbl_get(client, "workspace_folders", 1, "name")
+        if not path then
+            return
+        end
+
+        -- override the lua-language-server settings for Neovim config
+        client.settings = vim.tbl_deep_extend("force", client.settings, {
+            Lua = {
+                runtime = {
+                    version = "LuaJIT"
+                },
+                -- Make the server aware of Neovim runtime files
+                workspace = {
+                    checkThirdParty = false,
+                    library = {
+                        vim.env.VIMRUNTIME
+                        -- Depending on the usage, you might want to add additional paths here.
+                        -- "${3rd}/luv/library"
+                        -- "${3rd}/busted/library",
+                    }
+                }
+            }
+        })
+    end
+}