feat: Add lifecycle hooks for nitric.

[tjholm]

A proposal for lifecycle hooks in the nitric runtime sdks.

Happy to update the naming to whatever we like. Implementing in the node-sdk first as this will represent the reference implementation for the other SDKs.

import { Environment, EnvironmentStage } from "@nitric/sdk";

// Check if a local run
Environment.isLocalRun();

// Execute code during a local run
Environment.whenLocalRun(() => {
   // run code here
});
// Check if a build/collection (during nitric up, wording here could be updated to reflect this better
Environment.isBuild();

// Execute code during a build
Environment.whenBuild(() => {
   // run code here
});

// Check if the app is running in a deployment environment
Environment.isCloud();

// execute code only in a deployed environment
Environment.whenCloud(() => {

});

// Check if current environment is oneof
Environment.is([EnvironmentStage.Build, EnvironmentStage.LocalRun]);

// Execute code if current environment is oneof the provided stages.
Environment.when([EnvironmentStage.Build, EnvironmentStage.LocalRun], () => {

});

[tjholm]

Will rebase on: #238 when merged

[tjholm]

Current usage now:

import { Lifecycle } from "@nitric/sdk"

Lifecycle.whenCollecting(() => {

});

Lifecycle.whenRunning(() => {

});

Lifecycle.isRunning();

Lifecycle.isCollecting();