goalc/repl: Allow hot-loading files via ml with just the object name (#2036)

This allows you to not have to define the entire file path to a source
file to re-compile and load it. Technically a stop-gap until editor
tools are developed around writing OpenGOAL.


![image](https://user-images.githubusercontent.com/13153231/203196148-de61cf4b-42c8-43dc-a7fd-80e6ba6f5ac2.png)

As opposed to `(ml "goal_src/jak2/engine/game/main.gc")` (which still
works)

This is accomplished via the following config (connection attempts is
irrelevant):
```json
{
  "numConnectToTargetAttempts": 1,
  "jak2": {
    "asmFileSearchDirs": [
      "goal_src/jak2"
    ]
  }
}
```

This also provides a way to make game-specific configurations for the
REPL fairly easily.

common/util/FileUtil.cpp

@@ -321,10 +321,23 @@ std::string base_name(const std::string& filename) {
       break;
     }
   }
-
   return filename.substr(pos);
 }
 
+std::string base_name_no_ext(const std::string& filename) {
+  size_t pos = 0;
+  ASSERT(!filename.empty());
+  for (size_t i = filename.size() - 1; i-- > 0;) {
+    if (filename.at(i) == '/' || filename.at(i) == '\\') {
+      pos = (i + 1);
+      break;
+    }
+  }
+  std::string file_name = filename.substr(pos);
+  return file_name.substr(0, file_name.find_last_of('.'));
+  ;
+}
+
 void ISONameFromAnimationName(char* dst, const char* src) {
   // The Animation Name is a bunch of words separated by dashes
 
@@ -529,7 +542,7 @@ std::vector<fs::path> find_files_recursively(const fs::path& base_dir, const std
   std::vector<fs::path> files = {};
   for (auto& p : fs::recursive_directory_iterator(base_dir)) {
     if (p.is_regular_file()) {
-      if (std::regex_match(fs::path(p.path()).filename().string(), pattern)) {
+      if (std::regex_match(p.path().filename().string(), pattern)) {
         files.push_back(p.path());
       }
     }