Template files

• 1: Bazel targets
• 2: Changelog

1 - Bazel targets

2 - Changelog

• Move changelog rules to bzl/rules/git, improve ansible rules (c94123)
• Move changelog rules to bzl/rules/changelog (4d59d6)
• Move readme rules to bzl/rules/readme (95ea8d)
• Move bzl rules to bzl/rules/bzl (57930e)
• Move all leetcode to cfg/leetcode-submissions (28e6d9)
• Add changelog for all packages (a6ebf9)
• Fix git rules, add changelog (0c3c3e)
• Improve bzl_target_doc table, add function to TemplaterFuncMap (fc8e1d)
• Add bzl_target_doc (c5636e)
• Add al_bzl_target_doc, add support for .ndjson to go/template-files (a271fc)
• Update readmes (2c9d62)
• Add al_vial_submissions macro, update titles and descriptions (79c826)
• Add date to leetcode docs (bd8a08)
• Add al_gen_leetcode_submissions macro, remove leetcode from the tree (15824d)
• Use subpackages() to build docs instead of writing queries to the tree (ba7b67)
• Use query results instead of a static variable to generate stardoc (bad943)
• Add md targets for all md files, add bzl/vars/readmes.bzl (a39482)
• Add several macros, add data/misc, add go/template-files (86fa17)