[AltDaemon] Replaces local socket communication with XPC

Allows AltDaemon to be launched on demand + reject any connections not made from AltStore.

AltDaemon/AltDaemon-Bridging-Header.h

@@ -10,6 +10,23 @@
 #import "NSError+ALTServerError.h"
 #import "CFNotificationName+AltStore.h"
 
+// libproc
+int proc_pidpath(int pid, void * buffer, uint32_t buffersize);
+
+// Security.framework
+CF_ENUM(uint32_t) {
+    kSecCSInternalInformation = 1 << 0,
+    kSecCSSigningInformation = 1 << 1,
+    kSecCSRequirementInformation = 1 << 2,
+    kSecCSDynamicInformation = 1 << 3,
+    kSecCSContentInformation = 1 << 4,
+    kSecCSSkipResourceDirectory = 1 << 5,
+    kSecCSCalculateCMSDigest = 1 << 6,
+};
+
+OSStatus SecStaticCodeCreateWithPath(CFURLRef path, uint32_t flags, void ** __nonnull CF_RETURNS_RETAINED staticCode);
+OSStatus SecCodeCopySigningInformation(void *code, uint32_t flags, CFDictionaryRef * __nonnull CF_RETURNS_RETAINED information);
+
 NS_ASSUME_NONNULL_BEGIN
 
 @interface AKDevice : NSObject