Add function to check memory op support for allocators

## Summary

Standardize naming conventions across the entire wizapp-stdlib codebase by replacing inconsistent prefixes and snake_case with a unified `wp` prefix + CamelCase scheme.

## Changes

### Naming convention applied

| Pattern | Before | After |
|---|---|---|
| Public functions | `wapp_module_function` | `wpModuleFunction` |
| Public types | `GenericXxx`, bare `Xxx` | `WpXxx` |
| Constants / enum values | `WAPP_XXX`, `SHELL_XXX` | `WP_XXX`, `WP_SHELL_XXX` |
| Internal functions | `_module_function` | `_moduleFunction` |
| Storage-class macros | `wapp_extern`, `wapp_intern` | `wp_extern`, `wp_intern` |

### Modules affected

All 20 modules were renamed: `arena`, `array`, `dbl_list`, `queue`, `str8`, `mem_allocator`, `mem_utils`, `mem_os`, `file`, `cpath`, `log`, `shell_commander`, `shell_termcolour`, `shell_utils`, `prng/xorshift`, `uuid`, `tester`, `aliases`, `assert`, `misc_utils`, `platform` — plus their test files.

### Backward compatibility

Added `src/oldnames.h` with `#define OLD_NAME NEW_NAME` for every renamed symbol, organized by module under Constants → Types → Functions sections. Existing code that includes this file will compile without changes.

Reviewed-on: #12
Co-authored-by: Abdelrahman <said.abdelrahman89@gmail.com>
Co-committed-by: Abdelrahman <said.abdelrahman89@gmail.com>

VERSION

@@ -1 +1 @@
-2.0.0
+2.1.0

src/base/mem/allocator/mem_allocator.c

@@ -7,29 +7,72 @@
 
 void *wpMemAllocatorAlloc(const WpAllocator *allocator, u64 size) {
 	wpDebugAssert(allocator != NULL && (allocator->alloc) != NULL, "`allocator` and `allocator->alloc` should not be NULL");
+
+	if (wpMemAllocatorOpSupported(allocator, WP_MEM_OP_ALLOC)) {
+		return NULL;
+	}
+
 	return allocator->alloc(size, allocator->obj);
 }
 
 void *wpMemAllocatorAllocAligned(const WpAllocator *allocator, u64 size, u64 alignment) {
 	wpDebugAssert(allocator != NULL && (allocator->alloc_aligned) != NULL, "`allocator` and `allocator->alloc_aligned` should not be NULL");
+
+	if (wpMemAllocatorOpSupported(allocator, WP_MEM_OP_ALLOC_ALIGNED)) {
+		return NULL;
+	}
+
 	return allocator->alloc_aligned(size, alignment, allocator->obj);
 }
 
 void *wpMemAllocatorRealloc(const WpAllocator *allocator, void *ptr, u64 old_size, u64 new_size) {
 	wpDebugAssert(allocator != NULL && (allocator->realloc) != NULL, "`allocator` and `allocator->realloc` should not be NULL");
+
+	if (wpMemAllocatorOpSupported(allocator, WP_MEM_OP_REALLOC)) {
+		return NULL;
+	}
+
 	return allocator->realloc(ptr, old_size, new_size, allocator->obj);
 }
 
 void *wpMemAllocatorReallocAligned(const WpAllocator *allocator, void *ptr, u64 old_size,
                                          u64 new_size, u64 alignment) {
 	wpDebugAssert(allocator != NULL && (allocator->realloc_aligned) != NULL, "`allocator` and `allocator->realloc_aligned` should not be NULL");
+
+	if (wpMemAllocatorOpSupported(allocator, WP_MEM_OP_REALLOC_ALIGNED)) {
+		return NULL;
+	}
+
 	return allocator->realloc_aligned(ptr, old_size, new_size, alignment, allocator->obj);
 }
 
 void wpMemAllocatorFree(const WpAllocator *allocator, void **ptr, u64 size) {
-	if (!allocator || !(allocator->free)) {
+	wpDebugAssert(allocator != NULL && (allocator->free) != NULL, "`allocator` and `allocator->free` should not be NULL");
+
+	if (wpMemAllocatorOpSupported(allocator, WP_MEM_OP_FREE)) {
 		return;
 	}
 
 	allocator->free(ptr, size, allocator->obj);
 }
+
+b8 wpMemAllocatorOpSupported(const WpAllocator *allocator, WpMemOp op) {
+	wpDebugAssert(allocator != NULL, "`allocator` should not be NULL");
+
+	switch (op) {
+		case WP_MEM_OP_ALLOC:
+			return allocator->alloc != NULL;
+		case WP_MEM_OP_ALLOC_ALIGNED:
+			return allocator->alloc_aligned != NULL;
+		case WP_MEM_OP_REALLOC:
+			return allocator->realloc != NULL;
+		case WP_MEM_OP_REALLOC_ALIGNED:
+			return allocator->realloc_aligned != NULL;
+		case WP_MEM_OP_FREE:
+			return allocator->free != NULL;
+		default:
+			break;
+	}
+
+	return false;
+}

src/base/mem/allocator/mem_allocator.h

@@ -11,6 +11,16 @@
 BEGIN_C_LINKAGE
 #endif // !WP_PLATFORM_CPP
 
+typedef enum {
+	WP_MEM_OP_ALLOC,
+	WP_MEM_OP_ALLOC_ALIGNED,
+	WP_MEM_OP_REALLOC,
+	WP_MEM_OP_REALLOC_ALIGNED,
+	WP_MEM_OP_FREE,
+
+	COUNT_MEM_OPS
+} WpMemOp;
+
 typedef void  *(WpMemAllocFunc)(u64 size, void *alloc_obj);
 typedef void  *(WpMemAllocAlignedFunc)(u64 size, u64 alignment, void *alloc_obj);
 typedef void  *(WpMemReallocFunc)(void *ptr, u64 old_size, u64 new_size, void *alloc_obj);
@@ -42,6 +52,7 @@ void *wpMemAllocatorRealloc(const WpAllocator *allocator, void *ptr, u64 old_siz
 void *wpMemAllocatorReallocAligned(const WpAllocator *allocator, void *ptr, u64 old_size,
                                          u64 new_size, u64 alignment);
 void  wpMemAllocatorFree(const WpAllocator *allocator, void **ptr, u64 size);
+b8    wpMemAllocatorOpSupported(const WpAllocator *allocator, WpMemOp op);
 
 #ifdef WP_PLATFORM_CPP
 END_C_LINKAGE