feat: JS runtime

[nasdf]

Relevant issue(s)

Closes #79

Description

This PR adds a browser based JavaScript runtime to lens.

The runtime passes all tests within the host-go package.

Notable changes:

• Lens path requires a file:// or http:// https:// prefix
• The Data method of instance has been changed to Memory
• runtimes.Default has been added to return a default runtime for the current environment.

Todo:

• [ ] Come up with a strategy to test the runtime using the integration tests.
• [ ] Add github action workflow for js runtime tests

Tasks

• [x] I made sure the code is well commented, particularly hard-to-understand areas.
• [x] I made sure the repository-held documentation is changed accordingly.
• [x] I made sure the pull request title adheres to the conventional commit style (the subset used in the project can be found in tools/configs/validate-conventional-style.sh.
• [x] I made sure to discuss its limitations such as threats to validity, vulnerability to mistake and misuse, robustness to invalidation of assumptions, resource requirements, ...

How has this been tested?

make test:js

Specify the platform(s) on which this was tested:

• MacOS