lint: add lint:dependencies using depcheck

[legobeat]

Carries over dependency linting from https://github.com/MetaMask/metamask-module-template/blob/dc15354bb3086d20c5e1d80c2025b02655ab5360/package.json#L42 to check for inconsistent imports/deps.

uses: https://github.com/depcheck/depcheck/

[socket-security]

No top level dependency changes detected. Learn more about Socket for GitHub ↗︎

[socket-security]

👍 Dependency issues cleared. Learn more about Socket for GitHub ↗︎

This PR previously contained dependency changes with security issues that have been resolved, removed, or ignored.

[legobeat]

@SocketSecurity ignore global-prefix@1.0.2
@SocketSecurity ignore resolve-dir@1.0.1
@SocketSecurity ignore expand-tilde@2.0.2
@SocketSecurity ignore cosmiconfig@7.1.0
@SocketSecurity ignore is-windows@1.0.2
@SocketSecurity ignore homedir-polyfill@1.0.3
@SocketSecurity ignore semver-compare@1.0.0
@SocketSecurity ignore please-upgrade-node@3.2.0
@SocketSecurity ignore detect-file@1.0.0
@SocketSecurity ignore deps-regex@0.1.4
@SocketSecurity ignore source-map-js@1.0.2
@SocketSecurity ignore @types/parse-json@4.0.0
@SocketSecurity ignore parse-passwd@1.0.0
@SocketSecurity ignore multimatch@5.0.0
@SocketSecurity ignore require-package-name@2.0.1
@SocketSecurity ignore global-modules@1.0.0
@SocketSecurity ignore findup-sync@5.0.0
@SocketSecurity ignore array-differ@3.0.0
@SocketSecurity ignore readdirp@3.6.0
@SocketSecurity ignore callsite@1.0.0
@SocketSecurity ignore arrify@2.0.1
@SocketSecurity ignore depcheck@1.4.5

[mikesposito]

LGTM!

A note:
As we are about to migrate this package to core with MetaMask/core#1680 this will be removed anyway.

Still, could be useful while working on MetaMask/core#1684
cc @kanthesha

[cryptodev-2s]

LGTM!

[kanthesha]

Can we add a description about why we are doing the PR! We can see it's for depcheck, it'll be helpful for someone new if there's little more info on why depcheck.
Other than that, LGTM.