uc_ctl proposal (#1473)

* Add uc_ctl

* Add comments

* Slightly changed for bindings generation

* Generate bindings

bindings/dotnet/UnicornManaged/Const/Riscv.fs

@@ -7,6 +7,16 @@ open System
 [<AutoOpen>]
 module Riscv =
 
+    let UC_CPU_RISCV32_ANY = 0
+    let UC_CPU_RISCV32_BASE32 = 1
+    let UC_CPU_RISCV32_SIFIVE_E31 = 2
+    let UC_CPU_RISCV32_SIFIVE_U34 = 3
+
+    let UC_CPU_RISCV64_ANY = 0
+    let UC_CPU_RISCV64_BASE64 = 1
+    let UC_CPU_RISCV64_SIFIVE_E51 = 2
+    let UC_CPU_RISCV64_SIFIVE_U54 = 3
+
     // RISCV registers
 
     let UC_RISCV_REG_INVALID = 0