tests: complete disassembler tests

Signed-off-by: Amneesh Singh <natto@weirdnatto.in>

README.md

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+nothing to be seen here yet. LEAVE
+
+But if you are curious (probably not), read ahead
+
+# Dependencies
+## Tested toolchains
+
+- LLVM 16.0.6
+- GCC 12.3.0
+
+In theory, any toolchain supporting at least the C++20 standard should work.
+I am using LLVM's clang and libcxx as the primary toolchain.
+
+## Static libraries
+
+| Name   | Version   | Required? |
+|:------:|:----------|:---------:|
+| fmt    | >= 10.1.1 | yes       |
+| catch2 | >= 3.4    | for tests |
+
+This goes without saying but using a different toolchain to compile these libraries before linking probably won't work.
+I will add meson wrap support once LLVM 17 is out, since I want to get rid of fmt.