doc: move doc of non-deprecated macros from near-sdk-macros to reexport in near-sdk for continuous validation in ci

[dj8yfo]

documentation of all non-deprecated items of near-sdk-macros should be transferred to documentation
over re-export in near-sdk, e.g. https://github.com/near/near-sdk-rs/blob/master/near-sdk-macros/src/lib.rs#L46-L96 should be moved to near-sdk/src/lib.rs

/// ....
/// ...
pub use near_sdk_macros::near;

all

/// ```ignore

should be replaced with

/// ```no_run

or

/// ```rust

because it will allow to continuously check api, proposed in docs, for correctness in ci via test job https://github.com/near/near-sdk-rs/blob/master/.github/workflows/test.yml#L43 .

Doc in near-sdk-macros for these items will be empty (or a little msg with separator can be thrown in near/borsh-rs@46d7f65)

but it will be in near crate:

Tasks

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1. near_sdk_macros::ext_contract
2. near_sdk_macros::near
3. near_sdk_macros::near_bindgen
4. near_sdk_macros::BorshStorageKey
5. near_sdk_macros::EventMetadata
6. near_sdk_macros::FunctionError
7. near_sdk_macros::NearSchema
8. near_sdk_macros::PanicOnDefault
9. add BIG BIG HIGHLIGHTED link from QuickStart section, leading to #[near] documentation

[dj8yfo]

mentioned above as one of subtasks