pin bazel version at 8.2.1 and fix compilation failures due to bzlmod (#28)

Author: noajshu

.bazelrc

@@ -1 +1,4 @@
-build --cxxopt='-std=c++20' --noenable_bzlmod --enable_workspace
+common --noenable_bzlmod --enable_workspace
+build --cxxopt='-std=c++20'
+# HIGHS requires this define or else it is about 1.5x slower
+build --copt="-DNDEBUG=0"

.bazelversion

@@ -0,0 +1 @@
+8.2.1

.gitignore

@@ -30,7 +30,5 @@ eclipse-*bin/
 # Ignore jekyll build output.
 /production
 /.sass-cache
-# Bazelisk version file
-.bazelversion
 # User-specific .bazelrc
 user.bazelrc