Add preset index lists for quick symbol selection

[tanishq-rocks]

Summary

Adds a Preset Index List dropdown to all scanner/screener indicators, letting users scan a full Nifty index instead of manually pasting symbols into the Notes field.

• New Preset Index List input (group: Preset Index Lists) with 22 options: None (use Notes), Nifty 50, Next 50, 100, 200, 500, LargeMidcap 250, Midcap 50/100/150, Smallcap 50/100/250, Microcap 250, Bank, Private Bank, PSU Bank, Auto, Finance, FMCG, Metal, Pharma, Realty.
• Since request.security() allows at most 40 calls per script, each index is pre-split into 40-symbol Pages (Page 1 (1-40), Page 2 (41-80), ...), selected via a matching <List Name> — Page dropdown.
• effective_symbols now resolves via a switch on the selected list/page, falling back to the existing manually-pasted i_symbols Notes input when None (use Notes) is selected — so existing behavior/configs are preserved by default.
• Applied consistently across all 14 scanner/screener scripts.

Why

Manually pasting up to 40 EXCHANGE:SYMBOL pairs into the Notes field for every scan was tedious and error-prone. This adds ready-made Nifty index/sector symbol lists so users can scan a whole index in one click, while still supporting custom symbol lists as before.

Files changed

• ICT Displacement Candles/[Scanner] ICT Displacement Candles.txt
• ICT Equal Highs and Lows/ICT Equal Highs and Lows with Screener.txt
• ICT Fair Value Gap (FVG)/Scanner - ICT Fair Value Gap (FVG) Scanner.txt
• ICT Liquidity Sweep Pattern/Scanner - ICT Liquidity Sweep Pattern Scanner.txt
• ICT Liquidity Void/[Scanner] ICT Liquidity Void Fill Scanner.txt
• ICT Liquidity Void/ICT Liquidity Void Screener.txt
• ICT Market Structure Shift (MSS)/ICT Market Structure Shift (MSS) Screener.txt
• ICT Mitigation Block/[Scanner] ICT Mitigation Block Scanner.txt
• Momentum Setup - RSI Direction Confirmation Scanner/... Bajaj Momentum Investing Setup with Scanner.txt
• .../[Scanner] Momentum Setup - RSI Directional Momentum.txt
• Option Buying Scalping Setup/... Option Buying Scalping Setup with Scanner.txt
• Option Buying Scalping Setup/... Vijay Thakare Option Buying Scalping Setup.txt (minor unrelated one-line fix)
• Sideways Market Skipper/... Sideways Market Skipper Scanner.txt
• ICT Retracement to Order Block/... ICT Retracement to Order Block with Screener.txt
• .../... Market Profile by RicardoSantos).txt

Testing done

• Already tested manually in TradingView — confirmed working.
• Load each updated script in TradingView Pine Editor and confirm it compiles without errors.
• For each script, select None (use Notes) and verify it still scans the pasted Notes symbols as before.
• Select a preset index (e.g. Nifty 50) and each of its Page options, and confirm the screener table populates with the expected symbols.
• Spot-check symbol counts per page (≤40) to confirm no request.security() call-limit errors.