refactor: change bmap binding generator name, layout for future refactor

Assets/CodeGen/BMapBinder/README.md

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+# BMap Binder
+
+A helper program to generate BMap binding for Python, C# and Rust.
+
+## Usage
+
+This program is consisted by 3 parts: ExpFcts Extractor, ExpFcts Analyzer and ExpFcts Render.
+
+"ExpFcts" is stand for "Exported Functions".
+
+### Setup Environment
+
+First we stay at the root directory of this project (this README file located).
+And execute `set BMAP_BINDER_ROOT=$(pwd)` on POSIX-like OS, or `set BMAP_BINDER_ROOT=%CD%` on Windows, to set environment variable.
+This environment variable will be used later by 3 parts conststing this project.
+
+Then we navigate to the root directory of this repository (where you can find top-level `CMakeLists.txt` file). And execute `set LIBCMO21_REPO_ROOT=$(pwd)` on POSIX-like OS, or `set LIBCMO21_REPO_ROOT=%CD%` on Windows, to set environment variable.
+This environment variable also will be used later.
+
+### ExpFcts Extractor
+
+We should first run ExpFcts Extractor to extract BMap exported function declarations fron header file.
+BMap header file include various contents, not only the declaration of exported functions, but also many of other utilities.
+We use regex to extract BMap exported function declarations only to avoid build a complete C lexer and parser in following steps and make our work easier.
+
+For running this program, please following these steps:
+
+* Enter `ExpFctsExtractor` directory and setup it with Astral UV.
+* Execute `uv run main.py` to run program.
+* Program will process BMap header file `BMExports.hpp` from BMap project located in root directory of this repository, and output extracted text to `Extracted` directory with name `BMExports.hpp`.
+
+### ExpFcts Analyzer
+
+Now we can run ExpFcts Analyzer to analyze extracted BMap exported function declarations.
+
+#### Build
+
+Enter `ExpFctsAnalyzer` directory, and execute following command to generate Antlr lexer and parser:
+
+```
+antlr4 ExpFctsLexer.g4
+antlr4 ExpFctsParser.g4
+```
+
+Keep staying that directory, and execute following command to build Java code.
+
+```
+javac *.java
+```
+
+#### Run
+
+Keep staying this directory, and execute following command to run program.
+
+```
+java MainRunner
+```
+
+After running, program will process input file `BMExports.hpp` located in `Extracted` directory, and output JSON file to `Analyzed` directory with name `BMExports.json`.
+
+### ExpFcts Render
+
+* Enter `ExpFctsRender` directory and setup it with Astral UV.
+* Execute `uv run main.py` to run program.
+* Program will process JSON file `BMExports.json` located in `Analyzed` directory, and output final artifacts to `Output` directory.