Add support for running the ANISE GUI in the browser

[thomasantony]

Summary

This PR makes some changes that enable running the ANISE GUI in the browser. This could be deployed to a static HTML page and hosted on Github Pages for ease-of-access.

Running the web version locally is best done using Trunk. Install it by running cargo install --locked trunk (or follow instructions in the linked page above). The ANISE GUI can then be built and launched by running

trunk serve --features gui

This will start up a web server (only used for local testing), at http://127.0.0.1:8080/.

Trunk can also be used for building the WASM binary and associated index.html and JS file by running:

trunk build --release --features gui

The files generated in dist/ can be published to Github pages or any other static web-host.

Architectural Changes

• An updated version of hifitime is required. See this PR: Adds support for using hifitime in WASM targets hifitime#262 . Currently, Cargo.toml points to my branch of hifitime. Once that PR is merged, I can update it to point to the new version on crates.io.

• Almanac::load() has been split up into two methods: Almanac::load() and Almanac::load_from_bytes(). The latter is used when loading files from the GUI running in the browser.

• Additional logic in ui.rs for loading the file using a browser-based file picker instead of the native file picker. This required some additional async stuff in the code. However, all of these new things are only built if compiled for the wasm32-unknown-unknown target

• The browser does not have an implementation of memory-mapped IO. So loading large files might use up a bunch of memory.

New Features

This PR enables running the ANISE GUI from a web browser.

Testing and validation

Manually tested the GUI.

[ChristopherRabotin]

Sweet, thanks! I'll need to test this.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7206d6a) 76.93% compared to head (fa9bdd7) 76.94%.

❗ Current head fa9bdd7 differs from pull request most recent head 1281857. Consider uploading reports for the commit 1281857 to get more accurate results

Additional details and impacted files

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##           master     #143   +/-   ##
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  Coverage   76.93%   76.94%           
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  Files          67       67           
  Lines        7595     7602    +7     
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+ Hits         5843     5849    +6     
- Misses       1752     1753    +1     

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[ChristopherRabotin]

I was trying to see if I could run this without the javascript time but it doesn't work. I'll need to make a new release of hifitime first, and I don't quite want to add the instant crate into hifitime for the reasons outlines in the other PR.

Updating hifitime isn't my highest priority at the moment, it's after both Nyx and ANISE Python support. Specifically, nyx-space/nyx#260, then #136, and then nyx-space/nyx#86.

Hence I'm afraid I'll keep this PR open for a while, likely until late January. Sorry about that.

[ChristopherRabotin]

Looks good, thanks!

[thomasantony]

I will update this PR once you create a new release for hifitime