Add some dev files in .Rbuildignore

Author: gregorgorjanc

RcppTskit/.Rbuildignore

@@ -13,10 +13,13 @@
 ^cran-comments\.md$
 ^inst/examples/create_test\.trees\.R$
 ^inst/examples/create_test\.trees\.py$
+^inst/examples/explore_reticulate\.R$
+^inst/examples/explore_slendr\.R$
 ^LICENSE.md$
 ^notes_pkg_dev\.Rmd$
 ^pkg_dev_notes\.md$
 ^tests/testthat/_snaps$
+^tools/clang-tidy\.py$
 ^vignettes/\.quarto$
 ^vignettes/*_files$
 ^\.\.$

RcppTskit/inst/examples/explore_reticulate.R

@@ -40,7 +40,7 @@ G <- ts$genotype_matrix()
 str(G)
 # int [1:54, 1:4] 0 0 0 0 0 ...
 py_id(G)
-# Error: ! Expected a python object, received a integer
+# Error: ! Expected a Python object, received a integer
 # --> a simple object (like a NumPy array) is converted to an R object
 #     https://rstudio.github.io/reticulate/#type-conversions
 #     https://rstudio.github.io/reticulate/articles/arrays.html

RcppTskit/inst/examples/explore_slendr.R

@@ -57,7 +57,7 @@ G <- ts$genotype_matrix()
 str(G)
 # int [1:100, 1:220] 0 0 2 2 0 2 1 0 0 1 ...
 reticulate::py_id(G)
-# Error: ! Expected a python object, received a integer
+# Error: ! Expected a Python object, received a integer
 # --> a simple object (like a NumPy array) is converted to an R object
 #     https://rstudio.github.io/reticulate/#type-conversions
 #     https://rstudio.github.io/reticulate/articles/arrays.html