rust/detect: extend visibility of SIGMATH_NOOPT

so that it can be used by plugins

Avoid export by cbindgen as this constant is also defined in C

rust/cbindgen.toml

@@ -114,6 +114,8 @@ exclude = [
     "IPPROTO_TCP",
     "IPPROTO_UDP",
     "SRepCatGetByShortname",
+    "SIGMATCH_NOOPT",
+    "SIGMATCH_INFO_STICKY_BUFFER",
 ]
 
 # Types of items that we'll generate. If empty, then all types of item are emitted.

rust/src/detect/mod.rs

@@ -79,9 +79,9 @@ pub struct SCSigTableElmt {
     >,
 }
 
-pub(crate) const SIGMATCH_NOOPT: u16 = 1; // BIT_U16(0) in detect.h
+pub const SIGMATCH_NOOPT: u16 = 1; // BIT_U16(0) in detect.h
 pub(crate) const SIGMATCH_QUOTES_MANDATORY: u16 = 0x40; // BIT_U16(6) in detect.h
-pub(crate) const SIGMATCH_INFO_STICKY_BUFFER: u16 = 0x200; // BIT_U16(9)
+pub const SIGMATCH_INFO_STICKY_BUFFER: u16 = 0x200; // BIT_U16(9)
 
 /// cbindgen:ignore
 extern {