chore: add branch and files support

[cloudnautique]

Added the ability to create and list branches to the tools.
Added the ability to list files and directories.
Added the ability to change files/create update files.
Added ability to delete files.

[cloudnautique]

To test this out before merging:

1. Clone cloudnautique/tools repo, and checkout the github_file_and_branches branch.
2. Run a docker container: `docker run -d -p 8080:8080 -v $(pwd)/tools:/custom-tools ghcr.io/obot-platform/obot:main
3. Build the tools.
   a. On Linux
   - cd tools/ && make
   b. on Mac/Win
   - docker exec -it <server> bash
   - apk add --update go && cd /custom-tools && ./scripts/build.sh
4. open localhost:8080 in the browser, configure model provider.
5. Install obot cli on host
6. obot agents
7. obot edit <obot agent id>
8. Under the tools section of the Yaml, add - /custom-tools/github
9. Then chat with the obot, do list my repos it will prompt you for the a PAT.

You can then try out creating branches, modifying files, etc.

[sangee2004]

When testing with latest version of github tool , we have the ability to do the following:

1. Create and list branches to the tools.
2. List files and directories.
3. Add new files and update existing files.
4. Delete existing files.