Move out ICU blobs

[HalidOdat]

Currently we store the binary blobs in the git history, this isn't ideal. Any changes we do will only increase the git history.

git for-each-ref --format='%(refname)' |
while read branch
do
        # f33c18d2b6e672ea1893bae06251390255f15dee - first commit
        size=$(git rev-list --disk-usage=human --objects f33c18d2b6e672ea1893bae06251390255f15dee..$branch)
        echo "$size $branch"
done |
sort -n

Checking the size of the branches, main occupies ~42MB

Looking at the versions it seems the size jumped a lot in between 0.16 and 0.17, in 0.17 added the blobs so it's probably the reason for the bump in size (though 0.17 was a pretty big release overall).

7.05 MiB refs/tags/v0.2.0
7.54 MiB refs/tags/v0.2.1
7.54 MiB refs/tags/v0.3.0
7.66 MiB refs/tags/v0.4.0
7.88 MiB refs/tags/v0.5.0
7.91 MiB refs/tags/v0.5.1
8.01 MiB refs/tags/v0.6.0
8.34 MiB refs/tags/v0.7.0
8.80 MiB refs/tags/v0.8.0
9.51 MiB refs/tags/v0.9.0
10.53 MiB refs/tags/v0.10
11.82 MiB refs/tags/v0.11
12.72 MiB refs/tags/v0.12
13.57 MiB refs/tags/v0.13
15.09 MiB refs/tags/v0.14
15.76 MiB refs/tags/v0.15
16.80 MiB refs/tags/v0.16
33.44 MiB refs/tags/v0.17
33.48 MiB refs/tags/v0.17.1
33.48 MiB refs/tags/v0.17.2
33.48 MiB refs/tags/v0.17.3