Add initial libunicode for UTF-8 parsing and example

- Added libunicode.asm to parse UTF-8 strings.
- Implemented count_utf8_codepoints to skip continuation bytes.
- Implemented count_utf8_graphemes to handle ZWJ (E2 80 8D) and combining marks (CC/CD).
- Added console.asm to the examples folder to test and print the results.
- Submitted for GSoC qualification task.

programs/develop/libraries/libunicode/libunicode.asm

@@ -0,0 +1,81 @@
+;=============================================================
+;   eax <- pointer to the memory address of the string
+;   * Do not use other register because it may be overwritten.
+;   -------PRIVATE--------
+;   ebx <- counter of codepoints
+;   ecx <- each byte
+;   
+;=============================================================
+count_utf8_codepoints:
+        mov     ebx, 0
+
+read_loop:
+        mov     cl, byte [eax]
+        
+        test    cl, cl        ; if it is an ending byte (0)
+        je      done
+
+        and     cl, 0xC0
+        cmp     cl, 0x80
+        je      skip_count
+        inc     ebx
+
+skip_count:
+        inc     eax
+        jmp     read_loop
+done:
+        mov eax, ebx
+        ret
+
+;=============================================================
+;   eax <- pointer to the memory address of the string
+;   * Do not use other register because it may be overwritten.
+;   -------PRIVATE--------
+;   ebx <- counter of grapheme
+;   ecx <- each byte
+;   
+;=============================================================
+count_utf8_gramphene:
+        mov     ebx, 0
+
+read_loop_graph:
+        mov     cl, byte [eax]
+        
+        test    cl, cl        ; if it is an ending byte (0)
+        je      done_graph
+; Is this accent
+
+        cmp     cl, 0xCC
+        je      skip_count_graph
+
+        cmp     cl, 0xCD
+        je      skip_count_graph
+
+; Check for not a zero width joint
+        cmp     cl, 0xE2
+        jne     not_any_special
+
+        cmp byte [eax+1], 0x80
+        jne     not_any_special
+
+        cmp byte [eax+2], 0x8D
+        jne     not_any_special
+
+        dec     ebx
+        add     eax, 3
+        jmp     read_loop_graph
+
+not_any_special:
+        and     cl, 0xC0        ; Is this a continution byte
+        cmp     cl, 0x80
+        je      skip_count_graph
+        inc     ebx
+
+skip_count_graph:
+        inc     eax
+        jmp     read_loop_graph
+
+done_graph:
+        mov eax, ebx
+        ret
+