WIP: ESM Conversion

[n1474335]

This branch covers the conversion of CyberChef to use ES6 modules.

Aims

• src/core to be rewritten in ESM format (.mjs, import, export, classes etc.)
• src/web to be rewritten in ESM format
• src/node to be rewritten in ESM format so that it can be run using node --experimental-modules without packing it with webpack (a packed CJS version will still be available for standard node)
• An operation architecture should be written to support a fully class-based model. One class per operation. All operation configuration should be held in this class, meaning that to add an operation, only one file needs to be added.
• All current operations should be ported to this model.
• The test runner should also be ported to ESM format and should not require packing.
• All current tests should be ported to this model.
• OperationConfig and modules should be automatically generated at the build stage.
• val-loader should be removed - it's an inelegant hack.
• New Dish data types should be added to support raw JSON and files.
• Operations should return a raw, native data type by default.
• A present() method should be called on the final operation in a recipe to display it in a sensible manner for the web app.
• Where sensible, operations can override the present() method to display their output in a custom format.

NodeJS API

We should aim to be able to export specific modules from the CyberChef package so that the 200+ operations can be used effectively in other projects.

An example (exact API still open to suggestions):

import { FromBase64 } from "cyberchef";

FromBase64.run("SGVsbG8sIFdvcmxkIQ==");

Issues

This should address #233.

Feedback

This represents a comprehensive architectural change so I'm very keen to get feedback. It will take a long time to port all current operations over to the new model, so we're starting off with just a small subset until we are completely happy that we've got it right. Please leave comments with ideas and recommendations.

@artemisbot @tlwr @d98762625

Remaining actions

• Fix PGP ops @n1474335
• Finish Node API @d98762625
• Write newOperation builder script @n1474335
• Test and fix the inline standalone version @n1474335
• Add Magic suggestions worker @n1474335
• Finish Bootstrap Material Design port @n1474335
• Update wiki documentation for building, testing, adding new ops and using the API @n1474335
• Add more tests @ALL