Missing network timezone entries: MGM+, Paramount+ with Showtime, U& (UKTV) channels, and 6 more

Ten networks used by currently-airing shows are absent from sc_network_timezones/network_timezones.txt, so get_network_timezone() falls back to the local system timezone and episodes get flagged as aired early — same class of bug as #90 (which you kindly fixed same-day on 2026-07-22; Vice TV (US) and SBS both work now, thanks).

Verified against master as of 2026-08-15: none of the names below appear in the file. Several are rebrands of channels the file already lists under legacy names, noted per line.

Proposed additions (following the file's existing conventions — US streamers → America/New_York, AU → Australia/Lord_Howe, NZ → Pacific/Auckland, JP → Japan, UK → Europe/London):

MGM+:America/New_York
Paramount+ with Showtime:America/New_York
TV2 (NZ):Pacific/Auckland
Binge:Australia/Lord_Howe
ABC TV:Australia/Lord_Howe
U&Alibi:Europe/London
U&Drama:Europe/London
U&W:Europe/London
TBS (JP):Japan
Discovery+ (UK):Europe/London

Notes:

• U&Alibi / U&Drama / U&W are the 2024 UKTV rebrands of Alibi (line ~100), UKTV Drama (line ~1481), and UKTV's W. The existing bare W:Australia/Lord_Howe (line ~1554) is the Australian W, so U&W needs its own UK entry rather than inheriting it.
• ABC TV is the current name of the Australian channel listed as ABC1 (line ~41).
• TBS (JP) is the Tokyo Broadcasting System; the existing bare TBS (line ~1260) is the US cable channel.
• Paramount+ with Showtime is the US Paramount+ tier TheTVDB emits as a distinct network name; the bare Paramount+ entry doesn't match it.

Open sc_network_timezones/network_timezones.txt and compare the proposed names with the existing legacy entries and regional conventions. Check get_network_timezone() with each added network name; the work is done when all ten names resolve to the specified timezones instead of the local system timezone.