refactor!: extract mason-lspconfig to separate plugin (#109)

The rationale behind this is to make boundaries clearer as mason.nvim
has no direct relation with lspconfig per se.

Also, hopefully, by having it as a separate package like this would
encourage more people to write similar extensions (think mason-dap and
mason-null-ls). Ideally such extensions wouldn't be required at all, but
there are definitely gaps to fill as of today.

From now on you'll need to add `williamboman/mason-lspconfig.nvim` as
a plugin if you want to use the `mason-lspconfig` extension:

```lua
use {
    { "williamboman/mason.nvim", branch = "alpha" },
    "williamboman/mason-lspconfig.nvim",
    "neovim/nvim-lspconfig",
}
```

```lua
Plug "williamboman/mason.nvim", { 'branch': 'alpha' }
Plug "williamboman/mason-lspconfig.nvim"
Plug "neovim/nvim-lspconfig"
```

1 files changed, 0 insertions, 61 deletions

diff --git a/tests/minimal_debug_init.lua b/tests/minimal_debug_init.lua
deleted file mode 100644
index 82a8b0d2..00000000
--- a/tests/minimal_debug_init.lua
+++ /dev/null
@@ -1,61 +0,0 @@
-local on_windows = vim.loop.os_uname().version:match "Windows"
-
-local function join_paths(...)
-    local path_sep = on_windows and "\\" or "/"
-    local result = table.concat({ ... }, path_sep)
-    return result
-end
-
-vim.opt.runtimepath = vim.env.VIMRUNTIME
-vim.opt.completeopt = "menu"
-
-local temp_dir = vim.loop.os_getenv "TEMP" or "/tmp"
-
-vim.opt.packpath = join_paths(temp_dir, "mason-debug", "site")
-
-local package_root = join_paths(temp_dir, "mason-debug", "site", "pack")
-local install_path = join_paths(package_root, "packer", "start", "packer.nvim")
-local compile_path = join_paths(install_path, "plugin", "packer_compiled.lua")
-
-local function load_plugins()
-    require("packer").startup {
-        {
-            "wbthomason/packer.nvim",
-            "neovim/nvim-lspconfig",
-            "williamboman/mason.nvim",
-        },
-        config = {
-            package_root = package_root,
-            compile_path = compile_path,
-        },
-    }
-end
-
-function _G.load_config()
-    local lspconfig = require "lspconfig"
-
-    local function on_attach(client, bufnr)
-        vim.api.nvim_buf_set_option(bufnr, "omnifunc", "v:lua.vim.lsp.omnifunc")
-    end
-
-    require("mason").setup {
-        log = vim.log.levels.DEBUG,
-    }
-
-    -- ==================================================
-    -- ========= SETUP RELEVANT SERVER(S) HERE! =========
-    -- ==================================================
-    --
-    -- lspconfig.sumneko_lua.setup { on_attach = on_attach }
-end
-
-if vim.fn.isdirectory(install_path) == 0 then
-    vim.fn.system { "git", "clone", "https://github.com/wbthomason/packer.nvim", install_path }
-    load_plugins()
-    require("packer").sync()
-    vim.cmd [[autocmd User PackerComplete ++once lua load_config()]]
-else
-    load_plugins()
-    require("packer").sync()
-    _G.load_config()
-end