feat(linter): add ignore_exit option

lua/linter.lua

@@ -62,6 +62,8 @@ local util = require("util")
 ---@field zero_idx_col? boolean
 --- Don't log stderr as errors (default: false)
 ---@field ignore_stderr? boolean
+--- Don't check exit status (default: false)
+---@field ignore_exit? boolean
 --- Post-process diagnostics
 ---@field hook? fun(self: ow.lsp.Linter, diagnostics: vim.Diagnostic[])
 
@@ -290,6 +292,7 @@ function Linter.validate(config)
             zero_idx_lnum = { config.zero_idx_lnum, "boolean", true },
             zero_idx_col = { config.zero_idx_col, "boolean", true },
             ignore_stderr = { config.ignore_stderr, "boolean", true },
+            ignore_exit = { config.ignore_exit, "boolean", true },
         })
     end
 
@@ -400,7 +403,7 @@ function Linter:run()
         end)
     )
 
-    if not ok then
+    if not self.config.ignore_exit and not ok then
         log.error("Failed to run %s: %s", self.config.cmd[1], resp)
         success = false
     end