Add multi-map support and map 2 offset handling

[synman]

Context

TODO comments for multi-map and offset support in MainActivity.

TODOs

1. Line 1757 — multi-map support
2. Line 1827 — map 2 offset handling

Related

• Add edit support for map 2 and cranking tables #10 (Map 2 editing) — directly related

References

• MainActivity.java:1757
• MainActivity.java:1827

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Created from workspace-wide TODO audit.