wip: scaffold proc crate and view macro

proc/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name        = "tengri_proc"
+description = "UI metaframework, procedural macros."
+version     = { workspace = true }
+edition     = { workspace = true }
+
+[lib]
+proc-macro = true
+
+[dependencies]
+syn = { version = "2", features = ["full"] }
+quote = { version = "1" }
+proc-macro2 = { version = "1", features = ["span-locations"] }