feat: add pre-commit hook support

Fixes #791

.pre-commit-config.yaml

@@ -0,0 +1,7 @@
+---
+repos:
+  - repo: https://github.com/vektra/mockery
+    rev: v2 # This is a mutable reference
+    hooks:
+      - id: generate-mocks
+      - id: generate-mocks-local

.pre-commit-hooks.yaml

@@ -0,0 +1,14 @@
+---
+- id: generate-mocks
+  name: generate mocks
+  description: Generate mocks with mockery
+  language: golang
+  entry: go run .
+  pass_filenames: false
+
+- id: generate-mocks-local
+  name: generate mocks with local mockery
+  description: Generate mocks with local mockery
+  language: system
+  entry: mockery
+  pass_filenames: false

docs/installation.md

@@ -32,8 +32,45 @@ Generate all the mocks for your project:
 
 Install through [brew](https://brew.sh/)
 
-    brew install mockery
-    brew upgrade mockery
+```shell
+brew install mockery
+```
+
+Upgrade to the latest version
+
+```shell
+brew upgrade mockery
+```
+
+### pre-commit
+
+Add the following lines to your `.pre-commit-config.yaml` file
+
+```yaml
+repos:
+  - repo: https://github.com/vektra/mockery
+    rev: v2 # This is a mutable reference to the latest version
+    hooks:
+      - id: generate-mocks
+```
+
+!!! note
+
+    If the file is missing, you can simply create it with this content
+
+Then install the hook with the following command:
+
+```console
+# This one will report a warning about mutable reference
+$ pre-commit install
+
+# This one will fix the warning
+$ pre-commit autoupdate
+```
+
+It will install everything. And from now, your commit will trigger mock generation.
+
+More information about pre-commit can be found on [pre-commit.com/](https://pre-commit.com/)
 
 
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