feat: Implement builtin mode for keepassxc

Signed-off-by: bakito <[email protected]>

assets/chezmoi.io/docs/reference/templates/keepassxc-functions/index.md

@@ -9,7 +9,7 @@ file. You will be prompted for the database password the first time
 `keepassxc-cli` is run, and the password is cached, in plain text, in memory
 until chezmoi terminates.
 
-The command used can by changed by setting the `keepassxc.command` configuration
+The command used can be changed by setting the `keepassxc.command` configuration
 variable, and extra arguments can be added by setting `keepassxc.args`. The
 password prompt can be disabled by setting `keepassxc.prompt` to `false`.
 
@@ -18,3 +18,6 @@ cache it for the duration of chezmoi's execution. Setting `keepassxc.mode` to
 `open` will tell chezmoi to instead open KeePassXC's console with `keepassxc-cli
 open` followed by `keepassxc.args`. chezmoi will use this console to request
 values from KeePassXC.
+When setting the `keepassxc.mode` to `builtin`, chezmoi uses a builtin library to
+access a keepassxc database. This mode becomes handy if the keepassxc-cli is not
+available.

go.mod

@@ -38,6 +38,7 @@ require (
 	github.com/spf13/cobra v1.8.1
 	github.com/spf13/pflag v1.0.5
 	github.com/tailscale/hujson v0.0.0-20221223112325-20486734a56a
+	github.com/tobischo/gokeepasslib/v3 v3.6.1
 	github.com/twpayne/go-expect v0.0.2-0.20241130000624-916db2914efd
 	github.com/twpayne/go-pinentry/v4 v4.0.0
 	github.com/twpayne/go-shell v0.4.0
@@ -152,6 +153,7 @@ require (
 	github.com/subosito/gotenv v1.6.0 // indirect
 	github.com/tetratelabs/wabin v0.0.0-20230304001439-f6f874872834 // indirect
 	github.com/tetratelabs/wazero v1.8.2 // indirect
+	github.com/tobischo/argon2 v0.1.0 // indirect
 	github.com/xanzy/ssh-agent v0.3.3 // indirect
 	github.com/yuin/goldmark v1.7.8 // indirect
 	github.com/yuin/goldmark-emoji v1.0.4 // indirect