Update HLTB for Steam to v1.2.0

[jcdoll]

Updates the HLTB for Steam plugin submodule to v1.2.0.

Changes

This is a major feature update:

• Steam Import Cache: For users with public Steam profiles, the plugin now fetches all Steam-to-HLTB ID mappings at startup. This enables direct lookups by HLTB ID instead of relying on name-based search, significantly improving match accuracy.
• Direct ID Fetch: When a cached HLTB ID exists, game data is fetched directly by ID (fast path, guaranteed match)
• Cache refetch: Fixed cache to always refetch misses so name fixes take effect immediately
• Name Fixes: Now includes 250+ game name corrections
• Test Coverage: Added Lua unit tests for Steam import and game fetch APIs

Background discussion here: #113

[shdwmtr]

Looks good. Not sure if you're aware, but there is a regex module Millennium provides:
https://docs.steambrew.app/plugins/lua/regex

Should make some of the matching easier.

[jcdoll]

Yeah I saw that partway through the python -> lua rewrite but chose not to use it for a few reasons:

1. unit tests run outside of millennium for CI via busted
2. the utils code is resuable so i can use it in scripts to test the matching performance and the scraping stuff i did today

It's simple code and so get some upsides this way