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, 54 deletions

diff --git a/scripts/lua/mason-scripts/mason-lspconfig/generate.lua b/scripts/lua/mason-scripts/mason-lspconfig/generate.lua
deleted file mode 100644
index 66c2ba62..00000000
--- a/scripts/lua/mason-scripts/mason-lspconfig/generate.lua
+++ /dev/null
@@ -1,54 +0,0 @@
-local a = require "mason-core.async"
-local path = require "mason-core.path"
-local _ = require "mason-core.functional"
-local lspconfig_server_mapping = require "mason-lspconfig.mappings.server"
-local script_utils = require "mason-scripts.utils"
-
-local MASON_LSPCONFIG_DIR = path.concat { vim.loop.cwd(), "lua", "mason-lspconfig" }
-
-local function get_lspconfig(name)
-    return require(("lspconfig.server_configurations.%s"):format(name))
-end
-
----@async
-local function create_lspconfig_filetype_map()
-    local filetype_map = {}
-
-    for _, server_name in ipairs(_.keys(lspconfig_server_mapping.lspconfig_to_package)) do
-        local config = get_lspconfig(server_name)
-        for _, filetype in ipairs(config.default_config.filetypes or {}) do
-            if not filetype_map[filetype] then
-                filetype_map[filetype] = {}
-            end
-            table.insert(filetype_map[filetype], server_name)
-            table.sort(filetype_map[filetype])
-        end
-    end
-
-    script_utils.write_file(
-        path.concat { MASON_LSPCONFIG_DIR, "mappings", "filetype.lua" },
-        "return " .. vim.inspect(filetype_map),
-        "w"
-    )
-end
-
----@async
-local function ensure_valid_mapping()
-    local server_mappings = require "mason-lspconfig.mappings.server"
-    local registry = require "mason-registry"
-
-    for lspconfig_server, mason_package in pairs(server_mappings.lspconfig_to_package) do
-        local lspconfig_ok, server_config =
-            pcall(require, ("lspconfig.server_configurations.%s"):format(lspconfig_server))
-        local mason_ok, pkg = pcall(registry.get_package, mason_package)
-        assert(lspconfig_ok and server_config ~= nil, lspconfig_server .. " is not a valid lspconfig server name.")
-        assert(mason_ok and pkg ~= nil, mason_package .. " is not a valid Mason package name.")
-    end
-end
-
-a.run_blocking(function()
-    a.wait_all {
-        create_lspconfig_filetype_map,
-        ensure_valid_mapping,
-    }
-end)