chore: change organization from metamask to bitcoindevkit

[notmandatory]

Description

Updated organization meta data that references metamask to bitcoindevkit.

Notes to the reviewers

I had to reduce the number of keywords in Cargo.toml to five to match what crates.io allows for the keywords field.

I also created this PR to trigger the CI so we can add those jobs to our default branch protection checks.

Changelog notice

• Updated organization meta data that references metamask to bitcoindevkit.

Checklists

All Submissions:

• I've signed all my commits
• I followed the contribution guidelines
• I ran cargo fmt and cargo clippy before committing

[notmandatory]

@darioAnongba I didn't test publishing yet, I want to figure out first if we want to keep the NPM name "bitcoindevkit" or change it to "bdk_wasm". If we change it to `bdk_wasm" should we change the repo name also?

Since the organization name is now "bitcoindevkit" it seems weird to me have a package called "@bitcoindevkit/bitcoindevkit" rather than "@bitcoindevkit/bdk_wasm".