Globally upgrade to syn 2.x and latest quote and proc_macro2 1x versions (#13846)

* globally upgrade quote to latest 1.0.x (1.0.26)

* globally upgrade syn to final 1.0.x version (1.0.109)

* globally upgrade proc-macro2 to 1.0.56

* upgrade to syn v2.0.13 and fix everything except NestedMeta

* fix parse nested metadata code in decl_runtime_apis.rs

* Port more stuff to syn 2.0

* Make the rest compile

* Ignore error

* update to syn 2.0.14

---------

Co-authored-by: Bastian Köcher <info@kchr.de>

substrate/frame/support/procedural/src/storage/genesis_config/genesis_config_def.rs

@@ -133,14 +133,13 @@ impl GenesisConfigDef {
 				.attrs
 				.iter()
 				.map(|attr| {
-					let meta = attr.parse_meta()?;
-					if meta.path().is_ident("cfg") {
+					if attr.meta.path().is_ident("cfg") {
 						return Err(syn::Error::new(
-							meta.span(),
+							attr.meta.span(),
 							"extra genesis config items do not support `cfg` attribute",
 						))
 					}
-					Ok(meta)
+					Ok(attr.meta.clone())
 				})
 				.collect::<syn::Result<_>>()?;
 

substrate/frame/support/procedural/src/storage/mod.rs

@@ -332,8 +332,8 @@ impl StorageLineDefExt {
 		let doc_attrs = storage_def
 			.attrs
 			.iter()
-			.filter_map(|a| a.parse_meta().ok())
-			.filter(|m| m.path().is_ident("doc"))
+			.filter(|a| a.meta.path().is_ident("doc"))
+			.map(|a| a.meta.clone())
 			.collect();
 
 		Self {

substrate/frame/support/procedural/src/storage/print_pallet_upgrade.rs

@@ -273,14 +273,12 @@ pub fn maybe_print_pallet_upgrade(def: &super::DeclStorageDefExt) {
 			doc = line.doc_attrs.iter().fold(String::new(), |mut res, attr| {
 				if let syn::Meta::NameValue(name_value) = attr {
 					if name_value.path.is_ident("doc") {
-						if let syn::Lit::Str(string) = &name_value.lit {
-							res = format!(
-								"{}
-	///{}",
-								res,
-								string.value(),
-							);
-						}
+						res = format!(
+							"{}
+							///{}",
+							res,
+							name_value.value.to_token_stream(),
+						);
 					}
 				}
 				res