docs: added more specification

docs/README.md

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+# Packager
+
+Packager is a tool for package management.  
+It was built to make it easier to download and distribute packages.
+
+## pkgr
+pkgr is the main tool for the packager.
+
+Because this tool is so feature rich, it has its own [README](./pkgr/README.md).
+
+## bootpkg
+bootpkg is a tool primariliy used to bootstrap the packager.
+
+### Usage
+
+```bash
+bootpkg strap ./pkgr.pkg
+```
+
+This will extract the pkgfile and read the `[pkgr.bootstrap]` section to bootstrap the packager or any other package.

docs/pkgfile.md

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+# PKGFILE
+This file is essentially a tar with the manifest in the header.
+
+## Format
+The format is as follows:
+```
+[PKGFILE version (1 byte)][manifest length x 256 (1 byte)][manifest length (1 byte)]
+[manifest (manifest length bytes)]
+[archive]
+```
+
+The file is Big Endian.
+
+## Unpacking
+To unpack a PKGFILE, you can use the following command:
+```bash
+pkgr unpack <pkgfile> <output>
+```
+
+## Packing
+You can write your own packer, or use the following command:
+```bash
+pkgr pack <manifest path> <archive path> <output file>
+```

docs/pkgr/README.md

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+# pkgr
+PKGR is the main tool for the packager.
+
+## Commands
+### `pkgr install [--bin/--build] <identifier>`
+This command will download a package from the repository or the uri provided and install it.
+This command can also be used to update a package.
+
+### `pkgr remove <package_name>`
+This command will remove a package from the system.
+
+### `pkgr revert <package_name>`
+This command will revert a package to the previous version.
+
+### `pkgr download <identifier> <path>`
+This command will download a package from the repository or the uri provided into the specified path.
+
+### `pkgr unpack <pkgfile> <output>`
+This command will unpack a pkgfile into the specified output directory.
+
+### `pkgr pack <manifest path> <archive path> <output file>`
+This command will pack a manifest and archive into a pkgfile.
+
+### `pkgr list [-i]`
+This command will list all packages known or installed packages if `-i` is specified.
+
+### `pkgr update [package_name]`
+This command will update all packages or a specific package.

docs/pkgr/installedmanifest.md

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+# Installed manifest
+
+## Where?
+The package manager will store the install manifest in:
+`/var/lib/pkgr/installed/<package_name>/<version>/installed.toml`
+
+To find the latest we'll use the `latest` symlink:
+`/var/lib/pkgr/installed/<package_name>/latest/installed.toml`
+
+```toml
+install_start = "2021-01-01T00:00:00Z" # install_start is the time the pkgr started installing the package
+install_end = "2021-01-01T00:00:00Z" # install_end is the time the pkgr finished installing the package
+install_by = "pkgr" # install_by is the name of the package manager that installed the package
+
+[old_versions] # This logs old versions of the package (that were installed before)
+9 = "../9/pkgr.pkg"
+
+# pkgr.* is reserved for the manifest of the package
+```