frame-support-test: migrate tests from `decl_*` macros to the new `pallet` macros

[koushiro]

What does it do?

This PR is a part of #12248 and it need #12401 to be merged firstly

In this PR, I migrate the tests of frame/support/test from old decl_* macros to the new pallet attribute macros, and remove some useless tests.

After this, I will remove the decl_* macros and do some other trivial things.

[koushiro]

Maybe I should use frame-system directly as base config to replace frame-support-test pallet and system module? What do you think?

By now, I removed the system module and used frame-system-test pallet as base config.

[koushiro]

@kianenigma I think #12401 could be reviewed and merged firstly?

[stale[bot]]

Hey, is anyone still working on this? Due to the inactivity this issue has been automatically marked as stale. It will be closed if no further activity occurs. Thank you for your contributions.

[ggwpez]

bot rebase

[paritytech-processbot[bot]]

Rebased

[ggwpez]

bot rebase

[paritytech-processbot[bot]]

Rebased

[ggwpez]

bot merge

[ggwpez]

/tip large

(combined tip together for https://github.com/paritytech/substrate/pull/12401, therefore large)

[substrate-tip-bot[bot]]

@ggwpez Contributor did not properly post their account address.

Make sure the pull request description has: "{network} address: {address}".

[sam0x17]

showerthought: would be cool if they could just specify it in their github bio 🤔