Filter out bindings and examples from `bdk-ffi` repo

[notmandatory]

Currently the bdk-ffi repo is larger than it should be because it contains binaries that were commited. These can be filtered out by filtering out the /bindings /targets /bdk-kotlin directories.

% git filter-repo --analyze
% cat .git/filter-repo/analysis/directories-all-sizes.txt 
=== All directories by reverse size ===
Format: unpacked size, packed size, date deleted, directory name
   207229290   22796324 <present>  <toplevel>
   178504424   15418308 2021-12-21 bindings
   177973324   15240704 2021-12-21 bindings/bdk-kotlin
   177106886   15019750 2021-12-21 bindings/bdk-kotlin/demo
   177045683   14965338 2021-12-21 bindings/bdk-kotlin/demo/src/main
   177045683   14965338 2021-12-21 bindings/bdk-kotlin/demo/src
   176997400   14958667 2021-10-17 bindings/bdk-kotlin/demo/src/main/resources
    27202918    6958343 2021-10-12 targets/kotlin
    27202918    6958343 2021-10-12 targets
    27200336    6957022 2021-10-12 targets/kotlin/src
    27198160    6955588 2021-10-12 targets/kotlin/src/main
    27176920    6947797 2021-10-12 targets/kotlin/src/main/resources/darwin-x86-64
    27176920    6947797 2021-10-12 targets/kotlin/src/main/resources
      381220     147184 2021-10-12 bdk-kotlin
      401468     141265 2021-11-24 bindings/bdk-swift
      119141     107315 2021-12-21 bindings/bdk-kotlin/gradle/wrapper
      119141     107315 2021-12-21 bindings/bdk-kotlin/gradle
      118547     106544 2021-10-12 bdk-kotlin/gradle/wrapper
      118547     106544 2021-10-12 bdk-kotlin/gradle

See: https://gist.github.com/notmandatory/2486392d207b5dfff85082d7747e685e

[notmandatory]

Using this command to filter the bdk-ffi repo:

git filter-repo --force --invert-paths --path bindings --path bdk-kotlin --path examples --path targets --path cc --path gradle --path jvm --path bdk-swift --path kotlin
git gc --aggressive --prune
git remote add upstream git@github.com:bitcoindevkit/bdk-ffi.git
git push upstream --force --all
git push upstream --force --tags

WARNING Anyone with work in progress on your clone of this repo should do the following commands to re-sync them:

git checkout master
git remote add upstream git@github.com:bitcoindevkit/bdk-ffi.git
git fetch --all
git fetch --tags -f
git reset --hard upstream/master
git checkout -b <wip_branch>_fix
git cherry-pick <revs in order from wip_branch>
git branch -D <wip_branch>
git gc --aggressive --prune

[notmandatory]

Looks like even though the data is pruned and pushed to upstream it's still in the GitHub repo when I make a new fork. I opened a Github support ticket, waiting for them to clear the data on their side.

[notmandatory]

completed.