Another code layering (#4037)

* working on formatting

* fixed basic lint errors; starting moving things to their appropriate location

* formatting

* update tslint to match the version of vscode we have

* remove unused code

* work in progress fixing layering

* formatting

* moved connection management service to platform

* formatting

* add missing file

* moving more servies

* formatting

* moving more services

* formatting

* wip

* moving more services

* formatting

* move css file

* add missing svgs

* moved the rest of services

* formatting

* changing around some references

* formatting

* revert tslint

* revert some changes that brake things

* formatting

* fix tests

* fix testzx

* fix tests

* fix tests

* fix compile issue

src/sql/workbench/browser/modal/media/copy.svg

@@ -0,0 +1 @@
+<svg id="Layer_1" data-name="Layer 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><title>copy</title><path d="M3-.15V3.21H0V15.95H13V12.58h3V-.15ZM12,15H1.08V4.12H12Zm3-3.36H13V3.21h-9V.75H15Z"/></svg>