feat: add phpinsights (#170)

* feat: add phpinsights

* doc: remove redundant mention of formatting in description

---------

Co-authored-by: Steven Arcangeli <506791+stevearc@users.noreply.github.com>

README.md

@@ -237,6 +237,7 @@ You can view this list in vim with `:help conform-formatters`
 - [pg_format](https://github.com/darold/pgFormatter) - PostgreSQL SQL syntax beautifier.
 - [php_cs_fixer](https://github.com/PHP-CS-Fixer/PHP-CS-Fixer) - The PHP Coding Standards Fixer.
 - [phpcbf](https://phpqa.io/projects/phpcbf.html) - PHP Code Beautifier and Fixer fixes violations of a defined coding standard.
+- [phpinsights](https://github.com/nunomaduro/phpinsights) - The perfect starting point to analyze the code quality of your PHP projects with support for auto-formatting.
 - [pint](https://github.com/laravel/pint) - Laravel Pint is an opinionated PHP code style fixer for minimalists.
 - [prettier](https://github.com/prettier/prettier) - Prettier is an opinionated code formatter. It enforces a consistent style by parsing your code and re-printing it with its own rules that take the maximum line length into account, wrapping code when necessary.
 - [prettierd](https://github.com/fsouza/prettierd) - prettier, as a daemon, for ludicrous formatting speed.

doc/conform.txt

@@ -259,6 +259,8 @@ FORMATTERS                                                    *conform-formatter
 `php_cs_fixer` - The PHP Coding Standards Fixer.
 `phpcbf` - PHP Code Beautifier and Fixer fixes violations of a defined coding
          standard.
+`phpinsights` - The perfect starting point to analyze the code quality of your
+              PHP projects with support for auto-formatting.
 `pint` - Laravel Pint is an opinionated PHP code style fixer for minimalists.
 `prettier` - Prettier is an opinionated code formatter. It enforces a consistent
            style by parsing your code and re-printing it with its own rules that

lua/conform/formatters/phpinsights.lua

@@ -0,0 +1,17 @@
+local util = require("conform.util")
+
+---@type conform.FileFormatterConfig
+return {
+  meta = {
+    url = "https://github.com/nunomaduro/phpinsights",
+    description = "The perfect starting point to analyze the code quality of your PHP projects.",
+  },
+  command = util.find_executable({
+    "vendor/bin/phpinsights",
+  }, "phpinsights"),
+  args = { "fix", "$FILENAME", "--no-interaction", "--quiet" },
+  cwd = util.root_file({
+    "phpinsights.php",
+  }),
+  stdin = false,
+}