Remove clangd linting errors

.clangd

@@ -0,0 +1,26 @@
+CompileFlags:
+  Add: [
+    -DSSIZE_MAX,
+    -DLWIP_NO_UNISTD_H=1,
+    -Dssize_t=long,
+    -D_SSIZE_T_DECLARED,
+    -Wno-unknown-warning-option
+  ]
+  Remove: [
+    -mlong-calls,
+    -fno-tree-switch-conversion,
+    -mtext-section-literals,
+    -mlongcalls,
+    -fstrict-volatile-bitfields,
+    -free,
+    -fipa-pta,
+    -march=*,
+    -mabi=*,
+    -mcpu=*
+  ]
+Diagnostics:
+  Suppress:
+    - pp_including_mainfile_in_preamble
+    - pp_expr_bad_token_start_expr
+    - redefinition_different_typedef
+    - main_returns_nonint