feat(queries): add tags and folds

queries/folds.scm

@@ -0,0 +1,3 @@
+(dictionary) @fold
+(array) @fold
+(textblock) @fold

queries/highlights.scm

@@ -1,5 +1,4 @@
 (keyword) @keyword
-
 [
 	"{"
 	"}"

queries/tags.scm

@@ -0,0 +1,12 @@
+(source_file) @tag.root
+
+(meta) @tag.meta
+(http) @tag.http
+(query) @tag.query
+(headers) @tag.headers
+(auths) @tag.auths
+(bodies) @tag.bodies
+(varsandassert) @tag.varsandassert
+(script) @tag.script
+(tests) @tag.tests
+(docs) @tag.docs