feat(razor): add parser and queries (#7545)

queries/razor/folds.scm

@@ -0,0 +1,14 @@
+[
+  (razor_if)
+  (razor_switch)
+  (razor_for)
+  (razor_foreach)
+  (razor_while)
+  (razor_do_while)
+  (razor_try)
+  (razor_catch)
+  (razor_finally)
+  (razor_compound_using)
+  (razor_section)
+  (razor_block)
+] @fold

queries/razor/highlights.scm

@@ -0,0 +1,58 @@
+; inherits: c_sharp
+
+[
+  (razor_comment)
+  (html_comment)
+] @comment @spell
+
+[
+  "at_page"
+  "at_using"
+  "at_model"
+  "at_rendermode"
+  "at_inject"
+  "at_implements"
+  "at_layout"
+  "at_inherits"
+  "at_attribute"
+  "at_typeparam"
+  "at_namespace"
+  "at_preservewhitespace"
+  "at_block"
+  "at_at_escape"
+  "at_colon_transition"
+] @constant.macro
+
+[
+  "at_lock"
+  "at_section"
+] @keyword
+
+[
+  "at_if"
+  "at_switch"
+] @keyword.conditional
+
+[
+  "at_for"
+  "at_foreach"
+  "at_while"
+  "at_do"
+] @keyword.repeat
+
+[
+  "at_try"
+  "catch"
+  "finally"
+] @keyword.exception
+
+[
+  "at_implicit"
+  "at_explicit"
+] @variable
+
+"at_await" @keyword.coroutine
+
+(razor_rendermode) @property
+
+(razor_attribute_name) @function

queries/razor/injections.scm

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+; inherits: c_sharp
+
+([
+  (html_comment)
+  (razor_comment)
+] @comment
+  (#set! injection.language "comment"))
+
+((element) @injection.content
+  (#set! injection.language "html")
+  (#set! injection.combined))