Add inlay-hint support

Author: ericdallo

.gitignore

@@ -3,9 +3,10 @@
 /.lein-failures
 .nrepl-port
 **/*/.lsp/.cache
-**/*/.clj-kondo/.cache
 .lsp/.cache
-.clj-kondo/.cache
+
+.clj-kondo/
+!.clj-kondo/config.edn
 /out
 target/
 /.DS_Store

src/lsp4clj/coercer.clj

@@ -109,6 +109,7 @@
 (s/def ::uri string?)
 
 (s/def ::edits (s/coll-of ::text-edit))
+(s/def ::text-edits (s/coll-of ::text-edit))
 (s/def ::edits-or-error
   (s/and (s/or :error ::response-error
                :edits ::edits)
@@ -421,6 +422,17 @@
                :ranges ::folding-ranges)
          (s/conformer second)))
 
+(def inlay-hint-kind-enum {:type 1 :parameter 2})
+
+(s/def :inlay-hint/kind (s/and keyword?
+                               inlay-hint-kind-enum
+                               (s/conformer inlay-hint-kind-enum)))
+
+(s/def ::inlay-hint
+  (s/keys :req-un [::position ::label]
+          :opt-un [:inlay-hint/kind ::text-edits ::tooltip ::padding-left ::padding-right ::data]))
+(s/def ::inlay-hints (s/coll-of ::inlay-hint))
+
 (s/def :server-capabilities/signature-help-provider
   (s/conformer #(cond (vector? %) {:trigger-characters %}
                       (map? %) %