Feat: massive changes to definition of components

This change switches back to the original `ctx<props>` syntax for
commponents. This lets lifetime elision to remove the need to match
exactly which lifetime (props or ctx) gets  carried to the output. As
such, `Props` is currently required to be static. It *is* possible to
loosen this restriction, and will be done in the future, though only
through adding metadata about the props through the Props derive
macro. Implementing the IS_STATIC trait is unsafe, so the derive macro
will do it through some heuristics.

For now, this unlocks sharing vnodes from parents to children, enabling
pass-thru components, fragments, portals, etc.

packages/core-macro/Cargo.toml

@@ -14,9 +14,9 @@ proc-macro = true
 [dependencies]
 once_cell = "1.7.2"
 proc-macro-hack = "0.5.19"
-proc-macro2 = "1.0.6"
+proc-macro2 = { version = "1.0.6" }
 quote = "1.0"
-syn = { version = "1.0.11", features = ["full",  "extra-traits"] }
+syn = { version = "1.0.11", features = ["full", "extra-traits"] }
 
 # testing
 [dev-dependencies]