initial stab at a dynamic config

lua/neotest-pest/config.lua

@@ -0,0 +1,33 @@
+local M = {}
+
+M.enable_sail = function()
+    return vim.fn.filereadable("vendor/bin/sail") == 1
+end
+
+M.get_pest_cmd = function()
+    local binary = "pest"
+
+    if vim.fn.filereadable("vendor/bin/pest") == 1 then
+        binary = "vendor/bin/pest"
+    end
+
+    return binary
+end
+
+M.get_env = function()
+  return {}
+end
+
+M.get_root_ignore_files = function()
+  return {}
+end
+
+M.get_root_files = function()
+  return { "tests/Pest.php" }
+end
+
+M.get_filter_dirs = function()
+  return { ".git", "node_modules", "vendor" }
+end
+
+return M