Add the ability to directly set version parts.

- Move unittests to a dedicated file.
- Rework CLI making version part selection an option that can be passed
  into many commands.
- Add support for updates to version constants defined in soruce files.

tupdate_version.nim

@@ -0,0 +1,98 @@
+import std/[paths, tables, unittest]
+import ./update_version
+
+suite "update_version":
+
+  test "incrementLastVersionPart":
+    check:
+      incrementLastVersionPart("1.0.0") == "1.0.1"
+      incrementLastVersionPart("1.0.0-alpha.1") == "1.0.0-alpha.2"
+      incrementLastVersionPart("cicd_alphe.1-prerelease") == "cicd_alphe.2-prerelease"
+      incrementLastVersionPart("2024.04.1") == "2024.04.2"
+
+  test "incrementSemverPart":
+    check:
+      incrementSemverPart("1.0.0", major) == "2.0.0"
+      incrementSemverPart("1.0.0", minor) == "1.1.0"
+      incrementSemverPart("1.0.0", patch) == "1.0.1"
+      incrementSemverPart("1.5.10", patch) == "1.5.11"
+      incrementSemverPart("1.5.10", minor) == "1.6.0"
+      incrementSemverPart("1.5.10-alpha.1", prerelease) == "1.5.10-alpha.2"
+      incrementSemverPart("1.5.10-alpha.1+build.10", prerelease) == "1.5.10-alpha.2"
+      incrementSemverPart("1.5.10-alpha.1+build.10", buildmetadata) == "1.5.10-alpha.1+build.11"
+      incrementSemverPart("1.5.10", buildmetadata) == "1.5.10+build.0"
+
+  test "fmtSemver":
+    check:
+      fmtSemver(newTable([
+          (major, "5"), (minor, "2"), (patch, "62"),
+          (prerelease, "alpha.59"), (buildmetadata, "githash_123098")])) ==
+        "5.2.62-alpha.59+githash_123098"
+
+  test "setLastVersionPart":
+    check:
+      setLastVersionPart("1.0.0", "5") == "1.0.5"
+      setLastVersionPart("cicd.2", "3-alpha.1") == "cicd.3-alpha.1"
+
+  test "setSemverPart":
+    check:
+      setSemverPart("1.4.2-alpha.5+a3e4b69", minor, "7") == "1.7.0"
+      setSemverPart("1.4.2-alpha.5+a3e4b69", major, "3") == "3.0.0"
+      setSemverPart("1.4.2-alpha.5+a3e4b69", prerelease, "beta.1") == "1.4.2-beta.1"
+      setSemverPart("1.4.2-alpha.5+a3e4b69", buildmetadata, "testbuild") == "1.4.2-alpha.5+testbuild"
+
+  test "replaceVersionInSource - Nim":
+    let pkgVersion = PackageVersion(
+      lang: lNim,
+      file: Path("./testpackage.nimble"),
+      version: "1.0.3",
+      name: "testpackage")
+
+    let source = """
+import std/[sequtils, strutils]
+
+const IGNORED_VERSION* = "1.0.0"
+const OTHER_PKG_VERSION* = "4.2.1"
+const TESTPKG_VERSION* = "1.0.2"
+
+when isMainModule:
+  echo "sample file"
+"""
+
+    check replaceVersionInSource(source, pkgVersion, "1.0.2") == """
+import std/[sequtils, strutils]
+
+const IGNORED_VERSION* = "1.0.0"
+const OTHER_PKG_VERSION* = "4.2.1"
+const TESTPKG_VERSION* = "1.0.3"
+
+when isMainModule:
+  echo "sample file"
+"""
+
+  test "replaceVersionInSource - JavaScript":
+    let pkgVersion = PackageVersion(
+      lang: lNode,
+      file: Path("./package.json"),
+      version: "1.0.3",
+      name: "testpackage")
+
+    let source = """
+import { createApp } from 'vue'
+import './styles/main.css'
+import App from './App.vue'
+
+export const TESTPACKAGE_VERSION = "1.0.2"
+
+createApp(App)
+"""
+
+    check replaceVersionInSource(source, pkgVersion, "1.0.2") == """
+import { createApp } from 'vue'
+import './styles/main.css'
+import App from './App.vue'
+
+export const TESTPACKAGE_VERSION = "1.0.3"
+
+createApp(App)
+"""