NEAR API section (ex. JavaScript API) (#2251)

* js + rust overview

* minor improvements

* style fixes

* add most of rust

* api additions

* quick fix

* swapping to code snippets

* complete rust + javascript api docs

* change sidebars

* fix links

* fix: minor fixes

* New NEAR API section - Python examples (#2358)

* feat(near-api/python): Install, account and utilities examples

* feat(near-api/python): Missing examples added

* fix: added snippet for python

---------

Co-authored-by: gagdiez <[email protected]>
Co-authored-by: Damián Parrino <[email protected]>
Co-authored-by: Lyudmil Ivanov <[email protected]>
Co-authored-by: PiVortex <[email protected]>
Co-authored-by: Guillermo Alejandro Gallardo Diez <[email protected]>
Co-authored-by: Reza Rahemtola <[email protected]>

docs/2.build/2.smart-contracts/release/upgrade.md

@@ -11,8 +11,8 @@ allowing the code to be changed.
 
 Contract's can be updated in two ways:
 
-1. **Through tools** such as [NEAR CLI](../../../4.tools/cli.md) or
-   [near-api-js](../../../4.tools/near-api-js/quick-reference.md) (if you hold
+1. **Through tools** such as [NEAR CLI](../../../4.tools/cli.md) or the 
+   [NEAR API](../../../4.tools/near-api.md) (if you hold
    the account's
    [full access key](../../../1.concepts/protocol/access-keys.md)).
 2. **Programmatically**, by implementing a method that

docs/2.build/4.web3-apps/frontend.md

@@ -29,12 +29,12 @@ While your user interface layer will remain centralized, the backend layer—inc
 
 When building a frontend that can connect with the NEAR blockchain using standard web2 tooling will require you to import two dependencies:
 
-- [NEAR API JS](../../4.tools/near-api-js/quick-reference.md) - A JavaScript API tool that allows frontend clients the ability to view and retrieve data directly from the blockchain.
+- [NEAR API JS](../../4.tools/near-api.md) - A JavaScript API tool that allows frontend clients the ability to view and retrieve data directly from the blockchain.
 - [Wallet Selector](../../4.tools/wallet-selector.md) - Wallet integration tool allowing developers to choose which wallets are supported and allows users to choose which wallet they would like to connect with.
 
 :::tip
 
-[Checkout this article](integrate-contracts.md) to learn how to integrate smart contracts to your frontend, using [Wallet Selector](../../4.tools/wallet-selector.md) and [NEAR API JS](../../4.tools/near-api-js/quick-reference.md).
+[Checkout this article](integrate-contracts.md) to learn how to integrate smart contracts to your frontend, using [Wallet Selector](../../4.tools/wallet-selector.md) and [NEAR API JS](../../4.tools/near-api.md).
 
 :::