logs: replace every fmt::print with a lg call instead (#1368)

Favors the `lg` namespace over `fmt` directly, as this will output the
logs to a file / has log levels.

I also made assertion errors go to a file, this unfortunately means
importing `lg` and hence `fmt` which was attempted to be avoided before.
But I'm not sure how else to do this aspect without re-inventing the
file logging.

We have a lot of commented out prints as well that we should probably
cleanup at some point / switch them to trace level and default to `info`
level.

I noticed the pattern of disabling debug logs behind some boolean,
something to consider cleaning up in the future -- if our logs were more
structured (knowing where they are coming from) then a lot this
boilerplate could be eliminated.

Closes #1358

decompiler/config.cpp

@@ -1,5 +1,6 @@
 #include "config.h"
 
+#include "common/log/log.h"
 #include "common/util/FileUtil.h"
 #include "common/util/json_util.h"
 
@@ -29,7 +30,7 @@ Config read_config_file(const fs::path& path_to_config_file, const std::string&
   Config config;
   auto config_str = file_util::read_text_file(path_to_config_file);
   auto cfg = parse_commented_json(config_str, path_to_config_file.string());
-  fmt::print("Config Overide: '{}'\n", override_json);
+  lg::info("Config Overide: '{}'\n", override_json);
   auto cfg_override = parse_commented_json(override_json, "");
   cfg.update(cfg_override);