[CWE-400] Escape user-provided regex pattern in Finder

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

app/src/main/java/io/github/muntashirakon/AppManager/filters/options/FilterOption.java

@@ -120,7 +120,7 @@ public void setKeyValue(@NonNull String key, @Nullable String value) {
                     this.longValue = Long.parseLong(value);
                     break;
                 case TYPE_REGEX:
-                    this.regexValue = Pattern.compile(value);
+                    this.regexValue = Pattern.compile(Pattern.quote(value));
                 case TYPE_STR_MULTIPLE:
                     this.stringValues = value.split("\\n");
             }