Refactor the folder structure which only had 2 'real' modules, now it's more real, no need for splitting into folders beside the external one

build.sh

@@ -23,7 +23,7 @@ fi
 
 cd build
 
-I="-I../src/external/SDL/include -I../src/external/glad -I../src"
+I="-I../src/external/SDL/include -I../src/external/glad"
 flags="-Wall -Wextra -Werror -Wformat=2 -Wundef -Wshadow -Wno-missing-field-initializers -Wno-missing-braces -Wno-writable-strings \
     -g -fdiagnostics-absolute-paths \
     -nostdlib++ -fno-exceptions"
@@ -32,4 +32,4 @@ if [ -v debug ];   then flags="$flags -fsanitize=address,undefined -fno-omit-fra
 if [ -v release ]; then flags="$flags -DDEBUG_BUILD=0 -O2";                                                  fi
 if [ -v slow ];    then flags="$flags -DSLOW_BUILD=1";                                                       fi
 
-time clang -o te $flags ../src/text_editor/text_editor.cpp $I -lSDL3 -lm -lbacktrace
+time clang -o te $flags ../src/text_editor.cpp $I -lSDL3 -lm -lbacktrace