Fix npm audit security warnings; export CSteamUser

[engshien]

• Export CSteamUser so can promisify
• Fix npm audit warnings
  • Note: change of http to https is required for getSteamUser() as @cypress/request complains about the mixed usage

# Originally: npm audit

lodash.pick  >=4.0.0
Severity: high
Prototype Pollution in lodash - https://github.com/advisories/GHSA-p6mc-m468-83gw
fix available via `npm audit fix --force`
Will install [email protected], which is a breaking change
node_modules/lodash.pick
  cheerio  0.19.0 - 1.0.0-rc.3
  Depends on vulnerable versions of css-select
  Depends on vulnerable versions of lodash.pick
  node_modules/cheerio

nth-check  <2.0.1
Severity: high
Inefficient Regular Expression Complexity in nth-check - https://github.com/advisories/GHSA-rp65-9cf3-cjxr
fix available via `npm audit fix --force`
Will install [email protected], which is a breaking change
node_modules/nth-check
  css-select  <=3.1.0
  Depends on vulnerable versions of nth-check
  node_modules/css-select

request  *
Severity: moderate
Server-Side Request Forgery in Request - https://github.com/advisories/GHSA-p8p7-x288-28g6
Depends on vulnerable versions of tough-cookie
No fix available
node_modules/request

tough-cookie  <4.1.3
Severity: moderate
tough-cookie Prototype Pollution vulnerability - https://github.com/advisories/GHSA-72xf-g2v4-qvf3
No fix available
node_modules/tough-cookie

6 vulnerabilities (2 moderate, 4 high)