Feature/functions integration

[koteld]

NPM package "@chainlink/functions-toolkit" integrated to the Hardhat-Chainlink plugin.
Its methods were wrapped and are available both as Hardhat tasks and as methods in HRE.
Thus, most of the work related to interaction with Chainlink Function and DONs, manipulating secrets, gists is delegated to the "@chainlink/functions-toolkit".
Ability to run Functions simulations was wrapped as well and is available in the Hardhat-Chainlink plugin.

[zeuslawyer]

consider whether we should add npm-link
https://docs.npmjs.com/cli/v8/commands/npm-link

so that we can use the PR version of the code in a sample project to test ?

[koteld]

consider whether we should add npm-link https://docs.npmjs.com/cli/v8/commands/npm-link

so that we can use the PR version of the code in a sample project to test ?

In order to test that PR without publishing package to NPM you can:

1. Run npm build -> it will produce files necessary for the package
2. Run npm pack -> it will create a .tgz file of the package
3. In the root folder of your Hardhat project run: npm install path/to/package.tgz
4. Add require("@chainlink/hardhat-chainlink"); to thehardhat.config.jsin your Hardhat project
   That is it!

[zeuslawyer]

LGTM - note some comments/feedback.

[zeuslawyer]

Got it (i think!). There are two types of simulations in functions-toolkit:

1. the local simulation which is purely a deno-runtime execution of the functions javascript (https://github.com/smartcontractkit/functions-toolkit?tab=readme-ov-file#local-functions-simulator)
2. a testnet simulation which runs on the back of ganache, and is similar in concept to running a hardhat node, except it is with ganache and some contracts are deployed onto the testnet automatically. (https://github.com/smartcontractkit/functions-toolkit?tab=readme-ov-file#local-functions-testnet)

(1) is pure JS and no smart contracts are involved so there is no need for a provider.
(2) uses ganache and does care about the functions consumer in the sense that the consumer can be deployed to that simulated testnet.

You may have already fully grasped this but in case you didnt, please consider whether this impacts your assessment.

[koteld]

Hi @zeuslawyer,
After you approved my PR, I had to make several changes to the toolkit documentation and some small changes to the project structure, variables names, and usage of functions-toolkit. Consequently, merging is blocked again by the repository rules. Could you please review the PR once more?

Thank you.

[zeuslawyer]

Few comments to resolve please

[zeuslawyer]

LGTM.