Add arena allocator library

aux/compiledb.sh

@@ -10,3 +10,4 @@ make -B all_compiledb_libterminal
 make -B all_compiledb_libstring
 make -B all_compiledb_libkb
 make -B all_compiledb_libaux
+make -B all_compiledb_libarena

aux/devel.sh

@@ -15,6 +15,7 @@ make -B all_libterminal
 make -B all_libstring
 make -B all_libkb
 make -B all_libaux
+make -B all_libarena
 make -B all_apps
 make -B all_dist
 ./aux/limine_iso_amd64.sh

aux/docs.sh

@@ -11,5 +11,6 @@ make -B docs_libstring
 make -B docs_libterminal
 make -B docs_libkb
 make -B docs_libaux
+make -B docs_libarena
 
 mkdocs build

aux/format.sh

@@ -10,4 +10,5 @@ make -B format_liballoc
 make -B format_libstring
 make -B format_libkb
 make -B format_libaux
+make -B format_libarena
 make -B format_apps