Clean up extension and update repository references

- Removed duplicate WASM files and build artifacts
- Cleaned up test files and temporary files
- Updated all grammar repositories with READMEs and .gitignore
- All repositories now have proper documentation and are clean

test-hack.asm

@@ -1,6 +0,0 @@
-@2
-D=A
-@3
-D=D+A
-@0
-M=D

test-hdl.hdl

@@ -1,29 +0,0 @@
-// Test HDL file for syntax highlighting
-/**
- * Example chip demonstrating various HDL syntax patterns
- */
-CHIP TestChip {
-    IN  in[16],         // 16-bit input
-        load,           // control signal
-        address[3];     // 3-bit address
-
-    OUT out[16],        // 16-bit output
-        ready;          // status signal
-
-    PARTS:
-    // Built-in chip reference
-    BUILTIN ALU;
-
-    // Clocked body
-    CLOCKED DFF, Register;
-
-    // Part instantiation with connections
-    Mux16(a=in, b=out, sel=load, out=muxOut);
-    
-    // Register with bus connections
-    Register(in=muxOut, load=load, out=out);
-    
-    // Complex connection
-    ALU(x=in, y=out, zx=load, nx=false, zy=true, ny=false, 
-        f=true, no=false, out=aluOut, zr=zero, ng=negative);
-}