migrate new benchmarking syntax from frame_support::benchmarking to frame_benchmarking::v2 (#13235)

* * re-export frame_support::benchmarking in frame_benchmarking::
* prefer use frame_benchmarking::*; in examples, etc

* switch to frame_benchmarking::v2

* completely migrate new benchmarking code out of frame_support

* fix doc links

* remove unneeded return

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

* remove another unneeded return

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

* properly export all macros in v1

* refactor existing frame_benchmarking imports to use ::v1

---------

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

substrate/frame/support/test/tests/benchmark_ui/bad_param_name.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 

substrate/frame/support/test/tests/benchmark_ui/bad_param_name_too_long.rs

@@ -1,9 +1,9 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 
 #[benchmarks]
-mod benches {
+mod benchmarks {
 	#[benchmark]
 	fn bench(xx: Linear<1, 2>) {
 		#[block]

substrate/frame/support/test/tests/benchmark_ui/bad_param_name_upper_case.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 

substrate/frame/support/test/tests/benchmark_ui/bad_param_range.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 

substrate/frame/support/test/tests/benchmark_ui/bad_params.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 

substrate/frame/support/test/tests/benchmark_ui/dup_block.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 

substrate/frame/support/test/tests/benchmark_ui/dup_extrinsic_call.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 

substrate/frame/support/test/tests/benchmark_ui/extra_extra.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 

substrate/frame/support/test/tests/benchmark_ui/extra_skip_meta.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 

substrate/frame/support/test/tests/benchmark_ui/extrinsic_call_out_of_fn.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 
 #[extrinsic_call]
 mod stuff {}

substrate/frame/support/test/tests/benchmark_ui/missing_call.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 

substrate/frame/support/test/tests/benchmark_ui/missing_origin.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;
 

substrate/frame/support/test/tests/benchmark_ui/pass/valid_basic.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 use frame_support_test::Config;
 
 #[benchmarks]

substrate/frame/support/test/tests/benchmark_ui/unrecognized_option.rs

@@ -1,4 +1,4 @@
-use frame_support::benchmarking::*;
+use frame_benchmarking::v2::*;
 #[allow(unused_imports)]
 use frame_support_test::Config;