Implemented Asset foundation

Signed-off-by: Robear Selwans <robear.selwans@outlook.com>

subprojects/assetsys.wrap

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+[wrap-git]
+directory = assetsys
+url = https://github.com/evol3d/libs
+revision = main
+depth = 1
+
+patch_directory = assetsys
+
+[provide]
+dependency_names = assetsys

subprojects/evmod_ecs.wrap

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+[wrap-git]
+directory = evmod_ecs
+url = https://github.com/evol3D/evol-mod-flecs.git
+revision = master
+
+[provide]
+dependency_names = evmod_ecs

subprojects/packagefiles/assetsys/assetsys.c

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+#define ASSETSYS_IMPLEMENTATION
+#define STRPOOL_IMPLEMENTATION
+#include <assetsys.h>

subprojects/packagefiles/assetsys/meson.build

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+project('assetsys', 'c',
+  default_options: [
+    'default_library=static',
+  ],
+)
+
+assetsys_include = include_directories('.')
+
+# All other targets should follow the same template
+assetsys_src = files('assetsys.c')
+assetsys_lib = library('assetsys', assetsys_src, include_directories: assetsys_include)
+assetsys_dep = declare_dependency(link_with: assetsys_lib, include_directories: assetsys_include)
+
+if meson.version().version_compare('>= 0.54.0')
+  meson.override_dependency('assetsys', assetsys_dep)
+endif