[full-ci] experimental search backport (#5221)

* experimental search backport
fix basic extractor resource name
move escapeQuery regex into global variable
minor pr review changes
rename DebounceDuration env variable
add document title and content when rebuilding bleve resource

Co-authored-by: David Christofas <dchristofas@owncloud.com>

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/Masterminds/semver v1.5.0
 	github.com/MicahParks/keyfunc v1.5.1
 	github.com/armon/go-radix v1.0.0
+	github.com/bbalet/stopwords v1.0.0
 	github.com/blevesearch/bleve/v2 v2.3.5
 	github.com/coreos/go-oidc/v3 v3.4.0
 	github.com/cs3org/go-cs3apis v0.0.0-20221012090518-ef2996678965
@@ -36,6 +37,7 @@ require (
 	github.com/gofrs/uuid v4.3.1+incompatible
 	github.com/golang-jwt/jwt/v4 v4.4.2
 	github.com/golang/protobuf v1.5.2
+	github.com/google/go-tika v0.2.0
 	github.com/gookit/config/v2 v2.1.8
 	github.com/gorilla/mux v1.8.0
 	github.com/grpc-ecosystem/grpc-gateway/v2 v2.13.0