Adding support for a new version of Chromium DevTools Protocol to the .NET bindings

To add support for a new version of the Chromium DevTools Protocol to the .NET bindings, perform the following steps, where <N> is the major version of the protocol:

1. Add the new version string (v<N>) to the SUPPORTED_DEVTOOLS_VERSIONS list in //dotnet:version.bzl.
2. Create a new directory at //dotnet/src/webdriver/DevTools/v<N>, and copy the contents of the //dotnet/src/webdriver/DevTools/v<N-1> directory into it.
3. Rename each of the *.cs files in //dotnet/src/webdriver/DevTools/v<N> so that the file names start with V<N> instead of V<N-1>.
4. In each of the *.cs files in //dotnet/src/webdriver/DevTools/v<N>, update all occurrences of V<N-1> to V<N>. IMPORTANT: Do not change the case of V<N> in each .cs file.
5. In //dotnet/src/webdriver/DevTools/DevToolsDomains.cs, add an entry for version <N> to the SupportedDevToolsVersions dictionary initialization.
6. In //dotnet/src/webdriver:WebDriver.csproj.prebuild.cmd, add the following block (substituting the proper value for <N>):

if not exist  "%1..\..\..\bazel-bin\dotnet\src\webdriver\DevTools\v<N>\DevToolsSessionDomains.cs" (
  echo Generating CDP code for version <N>
  pushd "%1..\..\.."
  bazel build //dotnet/src/webdriver/DevTools:generate-v<N>
  popd
)

7. In //dotnet/src/webdriver:WebDriver.csproj.prebuild.sh, add the following block (substituting the proper value for <N>):

if [[ ! -f "$1../../../bazel-bin/dotnet/src/webdriver/DevTools/v<N>/DevToolsSessionDomains.cs" ]]
then
  echo "Generating CDP code for version <N>"
  bazel build //dotnet/src/webdriver/DevTools:generate-v<N>
fi

8. In each of the *.cs files in //dotnet/test/common/DevTools/, update all occurrences of V<N-2> to V<N-1>. For now, due to issues with timeliness of CI tool updates, we keep this one version behind the latest.
9. Commit the changes.

Removing support for a version of Chromium DevTools Protocol from the .NET bindings

To remove support for a version of the Chromium DevTools Protocol from the .NET bindings, perform the following steps, where <N> is the major version of the protocol:

1. Delete the contents of the //dotnet/src/webdriver/DevTools/v<N> directory.
2. In //dotnet/src/webdriver/DevTools/DevToolsDomains.cs, remove the entry for version <N> from the SupportedDevToolsVersions dictionary initialization.
3. Remove the version string (v<N>) from the SUPPORTED_DEVTOOLS_VERSIONS list in //dotnet:version.bzl.
4. Commit the changes.