hwcaps-loader: Add at v0.3.0

[joebonrichie]

Summary

for x86-64-v3 optimized binaries.

Depends on getsolus/ypkg#102

Test Plan

Build lzip and gzip with avx2 enabled in package.yml, verify the binary gets loaded from the new directory.

e.g.

--- a/packages/g/gzip/pspec_x86_64.xml
+++ b/packages/g/gzip/pspec_x86_64.xml
@@ -34,6 +34,8 @@
             <Path fileType="executable">/usr/bin/zless</Path>
             <Path fileType="executable">/usr/bin/zmore</Path>
             <Path fileType="executable">/usr/bin/znew</Path>
+            <Path fileType="data">/usr/hwcaps/x86-64-v1/bin/gzip</Path>
+            <Path fileType="data">/usr/hwcaps/x86-64-v3/bin/gzip</Path>
             <Path fileType="info">/usr/share/info/gzip.info</Path>
             <Path fileType="man">/usr/share/man/man1/gunzip.1</Path>
             <Path fileType="man">/usr/share/man/man1/gzexe.1</Path>

Checklist

• Package was built and tested against unstable
• This change could gainfully be listed in the weekly sync notes once merged