speculative decoding initial impl completed (+6 squashed commit)

Squashed commit:

[0a6306ca0] draft wip dont use (will be squashed)

[a758a1c9c] wip dont use (will be squashed)

[e1994d3ce] wip dont use

[f59690d68] wip

[77228147d] wip on spec decoding. dont use yet

[2445bca54] wip adding speculative decoding (+1 squashed commits)

Squashed commits:

[50e341bb7] wip adding speculative decoding

otherarch/utils.cpp

@@ -8,6 +8,7 @@
 #include <locale>
 #include <codecvt>
 #include <sstream>
+#include <ctime>
 
 
 void utreplace(std::string & str, const std::string & needle, const std::string & replacement) {
@@ -302,3 +303,14 @@ std::vector<uint8_t> kcpp_base64_decode(const std::string & encoded_string)
 
     return ret;
 }
+
+std::string get_timestamp_str()
+{
+    std::time_t t = std::time(nullptr);
+    std::tm* now = std::localtime(&t);
+    char buffer[16]; // Buffer to hold "hh:mm:ss" and null terminator
+    std::sprintf(buffer, "%02d:%02d:%02d", now->tm_hour, now->tm_min, now->tm_sec);
+    // Convert the buffer to a std::string
+    std::string timestamp(buffer);
+    return timestamp;
+}