Move to extension-ci-tools, enable distribution of nightly versions

[carlopi]

Include #108, plus fixes to build system.

Note that while building there are a few warnings connected to targets like:

Makefile:20: warning: overriding commands for target `pull'
extension-ci-tools/makefiles/duckdb_extension.Makefile:122: warning: ignoring old commands for target `pull'
Makefile:43: warning: overriding commands for target `test_release'
extension-ci-tools/makefiles/duckdb_extension.Makefile:82: warning: ignoring old commands for target `test_release'
Makefile:46: warning: overriding commands for target `test_debug'
extension-ci-tools/makefiles/duckdb_extension.Makefile:85: warning: ignoring old commands for target `test_debug'
Makefile:63: warning: overriding commands for target `format'
extension-ci-tools/makefiles/duckdb_extension.Makefile:115: warning: ignoring old commands for target `format'
Makefile:69: warning: overriding commands for target `update'
extension-ci-tools/makefiles/duckdb_extension.Makefile:119: warning: ignoring old commands for target `update'

Those might need to double checked, relevant code is likely already in extension-ci-tools, but I am not completely sure.

[carlopi]

I think this should sort of work, although it might need some minor touches.

[pdet]

Thanks for picking this up!

I think the SQL tests are not running?
No test cases matched '/Users/runner/work/substrait/substrait/test/*'

[carlopi]

@pdet: nice catch, up to the next

[pdet]

LGTM! Thanks Carlo!!

[pdet]

@carlopi I just gave this a go and got

con.execute("FORCE INSTALL substrait FROM core_nightly")
duckdb.duckdb.HTTPException: HTTP Error: Failed to download extension "substrait" at URL "http://nightly-extensions.duckdb.org/v1.1.0/osx_arm64/substrait.duckdb_extension.gz" (HTTP 403)
Extension "substrait" is an existing extension.

[carlopi]

Yes, I had seen it earlier, I think #110 solves this.

[carlopi]

I think it worked:

FORCE INSTALL substrait from core_nightly;
LOAD substrait;
SELECT extension_name, extension_version, install_mode, installed_from FROM duckdb_extensions() WHERE extension_name = 'substrait';

┌────────────────┬───────────────────┬──────────────┬────────────────┐
│ extension_name │ extension_version │ install_mode │ installed_from │
│    varchar     │      varchar      │   varchar    │    varchar     │
├────────────────┼───────────────────┼──────────────┼────────────────┤
│ substrait      │ d8ca65b           │ REPOSITORY   │ core_nightly   │
└────────────────┴───────────────────┴──────────────┴────────────────┘