Add C to Rust transpiler

* Add grammar for C and transpile it to Rust code
  * Add `generate.sh` to generate the JavaCC and JJTree files
  * Update `build.sh`

src/main/java/ghidrust/decompiler/parser/c/gen/ASTGhostStringToken.java

@@ -0,0 +1,33 @@
+package ghidrust.decompiler.parser.c.gen;
+
+/* Generated By:JJTree: Do not edit this line. ASTGhostStringToken.java Version 7.0 */
+/* JavaCCOptions:MULTI=true,NODE_USES_PARSER=false,VISITOR=true,TRACK_TOKENS=false,NODE_PREFIX=AST,NODE_EXTENDS=,NODE_FACTORY=,SUPPORT_CLASS_VISIBILITY_PUBLIC=true */
+public
+class ASTGhostStringToken extends SimpleNode {
+  String str_value;
+
+  public ASTGhostStringToken(int id) {
+    super(id);
+  }
+
+  public ASTGhostStringToken(CParser p, int id) {
+    super(p, id);
+  }
+
+
+  /** Accept the visitor. **/
+  public Object jjtAccept(CParserVisitor visitor, Object data) {
+
+    return
+    visitor.visit(this, data);
+  }
+
+  public void setValue(String s) {
+    value = s;
+  }
+
+  public String getValue() {
+    return str_value;
+  }
+}
+/* JavaCC - OriginalChecksum=7d91f560265b12b4f437803bcd66b7ba (do not edit this line) */