mostly incremental builds (#817)

* support cached builds for base -> base-java -> snowflake

* use plugin for image building

* fix matching on COPY from

* remove docker.gradle

* tmp commit

* update connectors

* finish rest of build files

* fix ide errors

* more build fixes

* clean up

* clean up for new soruces

* fix spotless

* fix flake problems

* add recommended empty file

* python caching

* fixes upon review

* clean up docker and build test files

* clean up python

* clean up

* fix integration test dependencies

* fix standard tests

* fix

* remove symlink

* re-add requirements to fix normalizatioon build

* fix symlink

* fix dumbest build problem of all

* add missing integration test def

* fix missing dep

* remove class exclusion

* move trim so null source versions are allowed

* rename map

* fix hardcoded value

* remove unnecessary dep

* use dashes for salesforce package name

* fix typo

* DRY and fix test image name

* Fix edit

* assert string is not empty

* build integration test image only for integrationTest

* move code generator to tools and rename docker build tasks

* make source test depend on integration test build, not the other way

* remove guard because the docker build should exist before the integrationtest is applied

* remove comment

* DRY up airbyte-source-test

* fix plugin compilation

* add missing dependency

* rename getTaggedImage to getDevTaggedImage

* fix test vs main docker build bug

airbyte-integrations/bases/base-python-test/base_python_test/base_python_test

@@ -1 +0,0 @@
-../../bases/base-python-test/base_python_test