Add citation (#71)

* add citation / joss done & dusted

* + findings from WinBuilder

* citentry >> bibentry style citation

inst/CITATION

@@ -1,14 +1,15 @@
 citHeader("To cite RCzechia in publications use:")
 
-citEntry(
-  entry    = "Article",
+
+bibentry(
+  bibtype  = "Article",
   title    = "RCzechia: Spatial Objects of the Czech Republic",
-  author   = "Lacko J.",
+  author   = person("Jindra", "Lacko", , "jindra.lacko@vse.cz", role = c("aut"),
+                    comment = c(ORCID = "0000-0002-0375-5156")),
   journal  = "Journal of Open Source Software",
   year     = 2023,
   volume   = 8,
   number   = 83,
   url      = "https://joss.theoj.org/papers/10.21105/joss.05082",
-  doi      = "10.21105/joss.05082",
-  textVersion = "Lacko, J., (2023). RCzechia: Spatial Objects of the Czech Republic. Journal of Open Source Software, 8(83), 5082, https://doi.org/10.21105/joss.05082"
+  doi      = "10.21105/joss.05082"
 )