Add support for Conditional Fields (#6864)

* Add conditions field to directus_fields

* Add conditions configuration

* Apply conditional overrides

* Handle conditions in nested groups

* Fix reverse mutating conditions

* Start on filter setup interface

* Move field types/constants to shared

* [WIP] Updated client side filter validation

* Support logical operators in client validation step

* Use new validation util in conditions check

* Add nesting in filter seutp

* Add filter rule setup configurator

* Fixes that should've been done in the merge

* Strip out filter-settings interface

TBD in a new PR

* Move browser to index

package-lock.json

@@ -57831,7 +57831,9 @@
 			"dependencies": {
 				"express": "4.17.1",
 				"fs-extra": "10.0.0",
+				"joi": "^17.4.1",
 				"knex-schema-inspector": "1.5.12",
+				"lodash": "^4.17.21",
 				"vue": "3.1.5",
 				"vue-router": "4.0.10"
 			},
@@ -63023,7 +63025,9 @@
 			"requires": {
 				"express": "4.17.1",
 				"fs-extra": "10.0.0",
+				"joi": "^17.4.1",
 				"knex-schema-inspector": "1.5.12",
+				"lodash": "^4.17.21",
 				"npm-run-all": "4.1.5",
 				"rimraf": "3.0.2",
 				"typescript": "4.3.5",