add claude opus 4.7

yes this model id is correct, cortecs is weird.

Author: BlockListed

providers/cortecs/models/claude-opus4-7.toml

@@ -0,0 +1,24 @@
+name = "Claude Opus 4.7"
+family = "claude-opus"
+release_date = "2026-04-16"
+last_updated = "2026-04-16"
+attachment = true
+reasoning = true
+temperature = false
+tool_call = true
+knowledge = "2026-01-31"
+open_weights = false
+
+[cost]
+input = 5.60
+output = 27.99
+cache_read = 0.56
+cache_write = 6.99
+
+[limit]
+context = 1_000_000
+output = 128_000
+
+[modalities]
+input = ["text", "image", "pdf"]
+output = ["text"]