Adds PE scanner infrastructure and data structures

Initializes infrastructure for PE file scanning.

Adds data structures for PE headers (DOS, optional, section),
including user-defined types for section characteristics.

Refactors existing pattern scanning code to utilize new PE data structures.

Adds basic parsing of PE headers.

include/omath/system/pe/data_directory.hpp

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+//
+// Created by Vlad on 10/8/2025.
+//
+
+#pragma once

include/omath/system/pe/optional_header.hpp

@@ -0,0 +1,5 @@
+//
+// Created by Vlad on 10/8/2025.
+//
+
+#pragma once

include/omath/system/pe/section_header.hpp

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+//
+// Created by Vlad on 10/8/2025.
+//
+
+#pragma once
+#include <cstdint>
+union section_characteristics_t
+{
+    std::uint32_t flags;
+    struct
+    {
+        std::uint32_t _pad0 : 5;
+        std::uint32_t cnt_code : 1; // Section contains code.
+        std::uint32_t cnt_init_data : 1; // Section contains initialized data.
+        std::uint32_t cnt_uninit_data : 1; // Section contains uninitialized data.
+        std::uint32_t _pad1 : 1;
+        std::uint32_t lnk_info : 1; // Section contains comments or some other type of information.
+        std::uint32_t _pad2 : 1;
+        std::uint32_t lnk_remove : 1; // Section contents will not become part of image.
+        std::uint32_t lnk_comdat : 1; // Section contents comdat.
+        std::uint32_t _pad3 : 1;
+        std::uint32_t no_defer_spec_exc : 1; // Reset speculative exceptions handling bits in the TLB entries for this
+                                             // section.
+        std::uint32_t mem_far : 1;
+        std::uint32_t _pad4 : 1;
+        std::uint32_t mem_purgeable : 1;
+        std::uint32_t mem_locked : 1;
+        std::uint32_t mem_preload : 1;
+        std::uint32_t alignment : 4; // Alignment calculated as: n ? 1 << ( n - 1 ) : 16
+        std::uint32_t lnk_nreloc_ovfl : 1; // Section contains extended relocations.
+        std::uint32_t mem_discardable : 1; // Section can be discarded.
+        std::uint32_t mem_not_cached : 1; // Section is not cachable.
+        std::uint32_t mem_not_paged : 1; // Section is not pageable.
+        std::uint32_t mem_shared : 1; // Section is shareable.
+        std::uint32_t mem_execute : 1; // Section is executable.
+        std::uint32_t mem_read : 1; // Section is readable.
+        std::uint32_t mem_write : 1; // Section is writeable.
+    };
+};
+
+// Section header
+//
+struct section_header_t
+{
+    char name[8];
+    union
+    {
+        std::uint32_t physical_address;
+        std::uint32_t virtual_size;
+    };
+    std::uint32_t virtual_address;
+
+    std::uint32_t size_raw_data;
+    std::uint32_t ptr_raw_data;
+
+    std::uint32_t ptr_relocs;
+    std::uint32_t ptr_line_numbers;
+    uint16_t num_relocs;
+    uint16_t num_line_numbers;
+
+    section_characteristics_t characteristics;
+};