feat(format): add c format

bundle/format.nvim/lua/format/ft/c.lua

@@ -0,0 +1,31 @@
+local M = {}
+
+function M.enabled()
+  return { 'uncrustify', 'clangformat', 'astyle' }
+end
+
+function M.clangformat(opt)
+  return {
+    exe = 'clang-format',
+    args = { '-assume-filename=' .. opt.filepath },
+    stdin = true,
+  }
+end
+
+function M.uncrustify(opt)
+  return {
+    exe = 'uncrustify',
+    args = { '-q', '-l', 'C' },
+    stdin = true,
+  }
+end
+
+function M.astyle(opt)
+  return {
+    exe = 'astyle',
+    args = {'--mode=c'},
+    stdin = true
+  }
+end
+
+return M